[android] - add expression conversion, add getters (#11352)

53 files changed, 2453 insertions, 13860 deletions

diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/expressions/Expression.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/expressions/Expression.java
index 0cd5aa9d6c..f6caa0b8e3 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/expressions/Expression.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/expressions/Expression.java
@@ -5,9 +5,13 @@ import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.annotation.Size;
 
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonPrimitive;
 import com.mapbox.mapboxsdk.style.layers.PropertyFactory;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 
 /**
@@ -101,10 +105,6 @@ public class Expression {
     return new ExpressionLiteral(bool);
   }
 
-  //
-  // Types
-  //
-
   /**
    * Create a literal object expression.
    *
@@ -159,10 +159,6 @@ public class Expression {
     return rgb(literal(red), literal(green), literal(blue));
   }
 
-  //
-  // Literals
-  //
-
   /**
    * Creates a color value from red, green, blue components, which must range between 0 and 255,
    * and an alpha component which must range between 0 and 1.
@@ -224,10 +220,6 @@ public class Expression {
     return new Expression("==", compareOne, compareTwo);
   }
 
-  //
-  // Color
-  //
-
   /**
    * Returns true if the input values are equal, false otherwise.
    *
@@ -301,10 +293,6 @@ public class Expression {
     return new Expression("!=", literal(compareOne), literal(compareTwo));
   }
 
-  //
-  // Decision
-  //
-
   /**
    * Returns `true` if the input values are not equal, `false` otherwise.
    *
@@ -477,7 +465,6 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-all">Style specification</a>
    */
-
   public static Expression all(@NonNull Expression... input) {
     return new Expression("all", input);
   }
@@ -494,7 +481,6 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-any">Style specification</a>
    */
-
   public static Expression any(@NonNull Expression... input) {
     return new Expression("any", input);
   }
@@ -532,7 +518,6 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-case">Style specification</a>
    */
-
   public static Expression switchCase(@NonNull @Size(min = 1) Expression... input) {
     return new Expression("case", input);
   }
@@ -661,10 +646,6 @@ public class Expression {
     return new Expression("get", input);
   }
 
-  //
-  // FeatureData
-  //
-
   /**
    * Retrieves a property value from the current feature's properties,
    * or from another object if a second argument is provided.
@@ -704,10 +685,6 @@ public class Expression {
     return get(literal(key), object);
   }
 
-  //
-  // Heatmap
-  //
-
   /**
    * Tests for the presence of an property value in the current feature's properties.
    *
@@ -719,10 +696,6 @@ public class Expression {
     return new Expression("has", key);
   }
 
-  //
-  // Lookup
-  //
-
   /**
    * Tests for the presence of an property value in the current feature's properties.
    *
@@ -817,7 +790,6 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-+">Style specification</a>
    */
-
   public static Expression sum(@Size(min = 2) Expression... numbers) {
     return new Expression("+", numbers);
   }
@@ -829,7 +801,6 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-+">Style specification</a>
    */
-
   public static Expression sum(@Size(min = 2) Number... numbers) {
     Expression[] numberExpression = new Expression[numbers.length];
     for (int i = 0; i < numbers.length; i++) {
@@ -845,7 +816,6 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-*">Style specification</a>
    */
-
   public static Expression product(@Size(min = 2) Expression... numbers) {
     return new Expression("*", numbers);
   }
@@ -857,7 +827,6 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-*">Style specification</a>
    */
-
   public static Expression product(@Size(min = 2) Number... numbers) {
     Expression[] numberExpression = new Expression[numbers.length];
     for (int i = 0; i < numbers.length; i++) {
@@ -866,10 +835,6 @@ public class Expression {
     return product(numberExpression);
   }
 
-  //
-  // Math
-  //
-
   /**
    * Returns the result of subtracting a number from 0.
    *
@@ -1215,7 +1180,6 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-min">Style specification</a>
    */
-
   public static Expression min(@Size(min = 1) Expression... numbers) {
     return new Expression("min", numbers);
   }
@@ -1227,7 +1191,6 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-min">Style specification</a>
    */
-
   public static Expression min(@Size(min = 1) Number... numbers) {
     Expression[] numberExpression = new Expression[numbers.length];
     for (int i = 0; i < numbers.length; i++) {
@@ -1243,7 +1206,6 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-max">Style specification</a>
    */
-
   public static Expression max(@Size(min = 1) Expression... numbers) {
     return new Expression("max", numbers);
   }
@@ -1255,7 +1217,6 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-max">Style specification</a>
    */
-
   public static Expression max(@Size(min = 1) Number... numbers) {
     Expression[] numberExpression = new Expression[numbers.length];
     for (int i = 0; i < numbers.length; i++) {
@@ -1331,7 +1292,6 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-concat">Style specification</a>
    */
-
   public static Expression concat(@NonNull Expression... input) {
     return new Expression("concat", input);
   }
@@ -1343,7 +1303,6 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-concat">Style specification</a>
    */
-
   public static Expression concat(@NonNull String... input) {
     Expression[] stringExpression = new Expression[input.length];
     for (int i = 0; i < input.length; i++) {
@@ -1365,10 +1324,6 @@ public class Expression {
     return new Expression("array", input);
   }
 
-  //
-  // String
-  //
-
   /**
    * Returns a string describing the type of the given value.
    *
@@ -1448,10 +1403,6 @@ public class Expression {
     return new Expression("to-string", input);
   }
 
-  //
-  // Types
-  //
-
   /**
    * Converts the input value to a number, if possible.
    * If the input is null or false, the result is 0.
@@ -1501,7 +1452,6 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-let">Style specification</a>
    */
-
   public static Expression let(@Size(min = 1) Expression... input) {
     return new Expression("let", input);
   }
@@ -1565,7 +1515,6 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-step">Style specification</a>
    */
-
   public static Expression step(@NonNull Number input, @NonNull Expression expression, Expression... stops) {
     return step(literal(input), expression, stops);
   }
@@ -1582,15 +1531,10 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-step">Style specification</a>
    */
-
   public static Expression step(@NonNull Expression input, @NonNull Expression expression, Expression... stops) {
     return new Expression("step", join(new Expression[] {input, expression}, stops));
   }
 
-  //
-  // Variable binding
-  //
-
   /**
    * Produces discrete, stepped results by evaluating a piecewise-constant function defined by pairs of
    * input and output values (\"stops\"). The `input` may be any numeric expression (e.g., `[\"get\", \"population\"]`).
@@ -1603,14 +1547,8 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-step">Style specification</a>
    */
-
   public static Expression step(@NonNull Number input, @NonNull Expression expression, Stop... stops) {
-    Expression[] expressions = new Expression[stops.length * 2];
-    for (int i = 0; i < stops.length; i++) {
-      expressions[i * 2] = literal(stops[i].value);
-      expressions[i * 2 + 1] = literal(stops[i].output);
-    }
-    return step(literal(input), expression, expressions);
+    return step(literal(input), expression, Stop.toExpressionArray(stops));
   }
 
   /**
@@ -1625,14 +1563,8 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-step">Style specification</a>
    */
-
   public static Expression step(@NonNull Expression input, @NonNull Expression expression, Stop... stops) {
-    Expression[] expressions = new Expression[stops.length * 2];
-    for (int i = 0; i < stops.length; i++) {
-      expressions[i * 2] = literal(stops[i].value);
-      expressions[i * 2 + 1] = literal(stops[i].output);
-    }
-    return step(input, expression, expressions);
+    return step(input, expression, Stop.toExpressionArray(stops));
   }
 
   /**
@@ -1647,16 +1579,11 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-interpolate">Style specification</a>
    */
-
   public static Expression interpolate(@NonNull Interpolator interpolation,
                                        @NonNull Expression number, Expression... stops) {
     return new Expression("interpolate", join(new Expression[] {interpolation, number}, stops));
   }
 
-  //
-  // Zoom
-  //
-
   /**
    * Produces continuous, smooth results by interpolating between pairs of input and output values (\"stops\").
    * The `input` may be any numeric expression (e.g., `[\"get\", \"population\"]`).
@@ -1669,21 +1596,11 @@ public class Expression {
    * @return expression
    * @see <a href="https://www.mapbox.com/mapbox-gl-js/style-spec/#expressions-interpolate">Style specification</a>
    */
-
   public static Expression interpolate(@NonNull Interpolator interpolation,
                                        @NonNull Expression number, Stop... stops) {
-    Expression[] expressions = new Expression[stops.length * 2];
-    for (int i = 0; i < stops.length; i++) {
-      expressions[i * 2] = literal(stops[i].value);
-      expressions[i * 2 + 1] = literal(stops[i].output);
-    }
-    return interpolate(interpolation, number, expressions);
+    return interpolate(interpolation, number, Stop.toExpressionArray(stops));
   }
-
-  //
-  // Ramps, scales, curves
-  //
-
+  
   /**
    * interpolates linearly between the pair of stops just less than and just greater than the input.
    *
@@ -1835,33 +1752,115 @@ public class Expression {
   }
 
   /**
+   * Indicates whether some other object is "equal to" this one.
+   *
+   * @param o the other object
+   * @return true if equal, false if not
+   */
+  @Override
+  public boolean equals(Object o) {
+    super.equals(o);
+    if (this == o) {
+      return true;
+    }
+
+    if (o == null || !(o instanceof Expression)) {
+      return false;
+    }
+
+    Expression that = (Expression) o;
+
+    if (operator != null ? !operator.equals(that.operator) : that.operator != null) {
+      return false;
+    }
+    return Arrays.deepEquals(arguments, that.arguments);
+  }
+
+  /**
+   * Returns a hash code value for the expression.
+   *
+   * @return a hash code value for this expression
+   */
+  @Override
+  public int hashCode() {
+    int result = operator != null ? operator.hashCode() : 0;
+    result = 31 * result + Arrays.hashCode(arguments);
+    return result;
+  }
+
+  /**
    * ExpressionLiteral wraps an object to be used as a literal in an expression.
    * <p>
    * ExpressionLiteral is created with {@link #literal(Number)}, {@link #literal(boolean)},
    * {@link #literal(String)} and {@link #literal(Object)}.
    * </p>
    */
-  private static class ExpressionLiteral extends Expression {
+  public static class ExpressionLiteral extends Expression {
 
     protected Object literal;
 
     /**
-     * Create an ExpressionValue wrapper.
+     * Create an expression literal.
      *
-     * @param object the object to be wrapped
+     * @param object the object to be treated as literal
      */
-    ExpressionLiteral(@NonNull Object object) {
+    public ExpressionLiteral(@NonNull Object object) {
       this.literal = object;
     }
 
     /**
-     * Get the wrapped object.
+     * Get the literal object.
      *
-     * @return the wrapped object
+     * @return the literal object
      */
     Object toValue() {
       return literal;
     }
+
+    /**
+     * Returns a string representation of the expression literal.
+     *
+     * @return a string representation of the object.
+     */
+    @Override
+    public String toString() {
+      return literal.toString();
+    }
+
+    /**
+     * Indicates whether some other object is "equal to" this one.
+     *
+     * @param o the other object
+     * @return true if equal, false if not
+     */
+    @Override
+    public boolean equals(Object o) {
+      if (this == o) {
+        return true;
+      }
+      if (o == null || getClass() != o.getClass()) {
+        return false;
+      }
+      if (!super.equals(o)) {
+        return false;
+      }
+
+      ExpressionLiteral that = (ExpressionLiteral) o;
+
+      return literal != null ? literal.equals(that.literal) : that.literal == null;
+    }
+
+    /**
+     * Returns a hash code value for the expression literal.
+     *
+     * @return a hash code value for this expression literal
+     */
+    @Override
+    public int hashCode() {
+      int result = super.hashCode();
+      result = 31 * result + (literal != null ? literal.hashCode() : 0);
+      return result;
+    }
   }
 
   /**
@@ -1896,9 +1895,9 @@ public class Expression {
     /**
      * Converts the int color to rgba(d, d, d, d) string representation
      *
-     * @return
+     * @return the string representation of a color
      */
-    public String convertColor() {
+    String convertColor() {
       return PropertyFactory.colorToRgbaString(color);
     }
   }
@@ -1921,9 +1920,90 @@ public class Expression {
     private Object value;
     private Object output;
 
-    public Stop(Object value, Object output) {
+    Stop(Object value, Object output) {
       this.value = value;
       this.output = output;
     }
+
+    /**
+     * Converts a varargs of Stops to a Expression array.
+     *
+     * @param stops the stops to convert
+     * @return the converted stops as an expression array
+     */
+    static Expression[] toExpressionArray(Stop... stops) {
+      Expression[] expressions = new Expression[stops.length * 2];
+      Stop stop;
+      Object inputValue, outputValue;
+      for (int i = 0; i < stops.length; i++) {
+        stop = stops[i];
+        inputValue = stop.value;
+        outputValue = stop.output;
+
+        if (!(inputValue instanceof Expression)) {
+          inputValue = literal(inputValue);
+        }
+
+        if (!(outputValue instanceof Expression)) {
+          outputValue = literal(outputValue);
+        }
+
+        expressions[i * 2] = (Expression) inputValue;
+        expressions[i * 2 + 1] = (Expression) outputValue;
+      }
+      return expressions;
+    }
+  }
+
+  /**
+   * Converts a JsonArray to an expression.
+   */
+  public final static class Converter {
+
+    /**
+     * Converts a JsonArray to an expression
+     *
+     * @param jsonArray the json array to convert
+     * @return the expression
+     */
+    public static Expression convert(@NonNull JsonArray jsonArray) {
+      if (jsonArray.size() == 0) {
+        throw new IllegalArgumentException("Can't convert empty jsonArray expressions");
+      }
+
+      final String operator = jsonArray.get(0).getAsString();
+      final List<Expression> arguments = new ArrayList<>();
+
+      JsonElement jsonElement;
+      for (int i = 1; i < jsonArray.size(); i++) {
+        jsonElement = jsonArray.get(i);
+        if (jsonElement instanceof JsonArray) {
+          arguments.add(convert((JsonArray) jsonElement));
+        } else if (jsonElement instanceof JsonPrimitive) {
+          arguments.add(convert((JsonPrimitive) jsonElement));
+        } else {
+          throw new RuntimeException("Unsupported expression conversion for " + jsonElement.getClass());
+        }
+      }
+      return new Expression(operator, arguments.toArray(new Expression[arguments.size()]));
+    }
+
+    /**
+     * Converts a JsonPrimitive to an expression literal
+     *
+     * @param jsonPrimitive the json primitive to convert
+     * @return the expression literal
+     */
+    private static Expression convert(@NonNull JsonPrimitive jsonPrimitive) {
+      if (jsonPrimitive.isBoolean()) {
+        return new Expression.ExpressionLiteral(jsonPrimitive.getAsBoolean());
+      } else if (jsonPrimitive.isNumber()) {
+        return new Expression.ExpressionLiteral(jsonPrimitive.getAsFloat());
+      } else if (jsonPrimitive.isString()) {
+        return new Expression.ExpressionLiteral(jsonPrimitive.getAsString());
+      } else {
+        throw new RuntimeException("Unsupported literal expression conversion for " + jsonPrimitive.getClass());
+      }
+    }
   }
 }
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/CameraFunction.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/CameraFunction.java
deleted file mode 100644
index 74c68cf574..0000000000
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/CameraFunction.java
+++ /dev/null
@@ -1,50 +0,0 @@
-package com.mapbox.mapboxsdk.style.functions;
-
-import android.support.annotation.Keep;
-import android.support.annotation.NonNull;
-
-import com.mapbox.mapboxsdk.style.functions.stops.ExponentialStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IntervalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.Stop;
-import com.mapbox.mapboxsdk.style.functions.stops.Stops;
-
-/**
- * Camera function. Functions that take camera properties as input (zoom for now)
- * <p>
- * Zoom functions allow the appearance of a map feature to change with map&#x27;s zoom level.
- * Zoom functions can be used to create the illusion of depth and control data density.
- * Each stop is an array with two elements: the first is a zoom level and the second is
- * a function output value.
- *
- * @param <I> the input type
- * @param <O> the output type
- * @see Function#zoom
- */
-public class CameraFunction<I extends Number, O> extends Function<I, O> {
-
-  /**
-   * Create an exponential camera function
-   *
-   * @param stops @see {@link com.mapbox.mapboxsdk.style.functions.stops.Stops#exponential(float, Stop[])}
-   */
-  CameraFunction(@NonNull ExponentialStops<I, O> stops) {
-    super(stops);
-  }
-
-  /**
-   * Create an interval camera function
-   *
-   * @param stops @see {@link com.mapbox.mapboxsdk.style.functions.stops.Stops#interval(Stop[])}
-   */
-  CameraFunction(@NonNull IntervalStops<I, O> stops) {
-    super(stops);
-  }
-
-  /**
-   * JNI constructor
-   */
-  @Keep
-  private CameraFunction(Stops<I, O> stops) {
-    super(stops);
-  }
-}
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/CompositeFunction.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/CompositeFunction.java
deleted file mode 100644
index 15e4474105..0000000000
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/CompositeFunction.java
+++ /dev/null
@@ -1,100 +0,0 @@
-package com.mapbox.mapboxsdk.style.functions;
-
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-
-import com.mapbox.mapboxsdk.style.functions.stops.CategoricalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.ExponentialStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IntervalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.Stop;
-import com.mapbox.mapboxsdk.style.functions.stops.Stops;
-import com.mapbox.mapboxsdk.style.layers.PropertyValue;
-
-import java.util.Map;
-
-/**
- * Composite functions combine Camera and SourceFunctions.
- * <p>
- * Composite functions allow the appearance of a map feature to change with both its
- * properties and zoom. Each stop is an array with two elements, the first is an object
- * with a property input value and a zoom, and the second is a function output value. Note
- * that support for property functions is not yet complete.
- *
- * @param <Z> the zoom type (usually Float)
- * @param <I> the input type (the feature property type)
- * @param <O> the output type (the property type)
- * @see Function#composite
- */
-public class CompositeFunction<Z extends Number, I, O> extends Function<Stop.CompositeValue<Z, I>, O> {
-
-  private final String property;
-  private PropertyValue<O> defaultValue;
-
-  CompositeFunction(@NonNull String property,
-                    @NonNull CategoricalStops<Stop.CompositeValue<Z, I>, O> stops) {
-    this(null, property, stops);
-  }
-
-  CompositeFunction(@NonNull String property,
-                    @NonNull ExponentialStops<Stop.CompositeValue<Z, I>, O> stops) {
-    this(null, property, stops);
-  }
-
-  CompositeFunction(@NonNull String property,
-                    @NonNull IntervalStops<Stop.CompositeValue<Z, I>, O> stops) {
-    this(null, property, stops);
-  }
-
-
-  /**
-   * JNI Constructor
-   */
-  private CompositeFunction(@Nullable O defaultValue, @NonNull String property,
-                            @NonNull Stops<Stop.CompositeValue<Z, I>, O> stops) {
-    super(stops);
-    this.defaultValue = new PropertyValue<>(property, defaultValue);
-    this.property = property;
-  }
-
-  /**
-   * Set the default value
-   *
-   * @param defaultValue the default value to use when no other applies
-   * @return this (for chaining)
-   */
-  public CompositeFunction<Z, I, O> withDefaultValue(PropertyValue<O> defaultValue) {
-    this.defaultValue = defaultValue;
-    return this;
-  }
-
-  /**
-   * @return the defaultValue
-   */
-  @Nullable
-  public PropertyValue<O> getDefaultValue() {
-    return defaultValue;
-  }
-
-  /**
-   * INTERNAL USAGE ONLY
-   *
-   * @return the feature property name
-   */
-  public String getProperty() {
-    return property;
-  }
-
-  /**
-   * {@inheritDoc}
-   */
-  @Override
-  public Map<String, Object> toValueObject() {
-    Map<String, Object> valueObject = super.toValueObject();
-    valueObject.put(PROPERTY_KEY, property);
-    if (defaultValue != null) {
-      valueObject.put(DEFAULT_VALUE_KEY, defaultValue.value);
-    }
-    return valueObject;
-  }
-
-}
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/Function.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/Function.java
deleted file mode 100644
index 80ff4198fc..0000000000
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/Function.java
+++ /dev/null
@@ -1,300 +0,0 @@
-package com.mapbox.mapboxsdk.style.functions;
-
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-
-import com.mapbox.mapboxsdk.style.functions.stops.CategoricalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.ExponentialStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IdentityStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IntervalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.Stop;
-import com.mapbox.mapboxsdk.style.functions.stops.Stops;
-
-import java.util.Map;
-
-import timber.log.Timber;
-
-/**
- * Functions are used to change properties in relation to the state of the map.
- * <p>
- * The value for any layout or paint property may be specified as a function. Functions allow you to
- * make the appearance of a map feature change with the current zoom level and/or the feature's properties.
- *
- * @param <I> the function's input type
- * @param <O> the target property's value type. Make sure it matches.
- * @see <a href="https://www.mapbox.com/mapbox-gl-style-spec/#types-function">The style specification</a>
- */
-public class Function<I, O> {
-
-  static final String PROPERTY_KEY = "property";
-  static final String DEFAULT_VALUE_KEY = "default";
-
-  /**
-   * Create an exponential {@link CameraFunction}
-   * <p>
-   * Zoom functions allow the appearance of a map feature to change with map&#x27;s zoom.
-   * Zoom functions can be used to create the illusion of depth and control data density.
-   * Each stop is an array with two elements, the first is a zoom and the second is a function output value.
-   *
-   * @param <Z>   the zoom level type (Float, Integer)
-   * @param <O>   the property type
-   * @param stops the stops implementation that define the function. @see {@link Stops#exponential(Stop[])}
-   * @return the {@link CameraFunction}
-   * @see CameraFunction
-   * @see ExponentialStops
-   * @see Stops#exponential(Stop[])
-   * @see Stops#exponential(Stop[])
-   * @see Stop#stop
-   */
-  public static <Z extends Number, O> CameraFunction<Z, O> zoom(@NonNull ExponentialStops<Z, O> stops) {
-    return new CameraFunction<>(stops);
-  }
-
-  /**
-   * Create an interval {@link CameraFunction}
-   * <p>
-   * Zoom functions allow the appearance of a map feature to change with map&#x2019;s zoom.
-   * Zoom functions can be used to create the illusion of depth and control data density.
-   * Each stop is an array with two elements, the first is a zoom and the second is a function output value.
-   *
-   * @param <Z>   the zoom level type (Float, Integer)
-   * @param <O>   the property type
-   * @param stops the stops implementation that define the function. @see {@link Stops#interval(Stop[])}
-   * @return the {@link CameraFunction}
-   * @see CameraFunction
-   * @see IntervalStops
-   * @see Stops#interval(Stop[])
-   * @see Stop#stop
-   */
-  public static <Z extends Number, O> CameraFunction<Z, O> zoom(@NonNull IntervalStops<Z, O> stops) {
-    return new CameraFunction<>(stops);
-  }
-
-  /**
-   * Create an exponential {@link SourceFunction}
-   * <p>
-   * Source functions allow the appearance of a map feature to change with
-   * its properties. Source functions can be used to visually differentiate
-   * types of features within the same layer or create data visualizations.
-   * Each stop is an array with two elements, the first is a property input
-   * value and the second is a function output value. Note that support for
-   * property functions is not available across all properties and platforms
-   * at this time.
-   *
-   * @param property the feature property name
-   * @param stops    the stops
-   * @param <I>      the function input type
-   * @param <O>      the function output type
-   * @return the {@link SourceFunction}
-   * @see SourceFunction
-   * @see ExponentialStops
-   * @see Stops#exponential(Stop[])
-   * @see Stop#stop
-   */
-  public static <I, O> SourceFunction<I, O> property(@NonNull String property, @NonNull ExponentialStops<I, O> stops) {
-    return new SourceFunction<>(property, stops);
-  }
-
-  /**
-   * Create an identity {@link SourceFunction}
-   * <p>
-   * Source functions allow the appearance of a map feature to change with
-   * its properties. Source functions can be used to visually differentiate
-   * types of features within the same layer or create data visualizations.
-   * Each stop is an array with two elements, the first is a property input
-   * value and the second is a function output value. Note that support for
-   * property functions is not available across all properties and platforms
-   * at this time.
-   *
-   * @param property the feature property name
-   * @param stops    the stops
-   * @param <T>      the function input/output type
-   * @return the {@link SourceFunction}
-   * @see SourceFunction
-   * @see IdentityStops
-   * @see Stops#identity()
-   * @see Stop#stop
-   */
-  public static <T> SourceFunction<T, T> property(@NonNull String property, @NonNull IdentityStops<T> stops) {
-    return new SourceFunction<>(property, stops);
-  }
-
-  /**
-   * Create an interval {@link SourceFunction}
-   * <p>
-   * Source functions allow the appearance of a map feature to change with
-   * its properties. Source functions can be used to visually differentiate
-   * types of features within the same layer or create data visualizations.
-   * Each stop is an array with two elements, the first is a property input
-   * value and the second is a function output value. Note that support for
-   * property functions is not available across all properties and platforms
-   * at this time.
-   *
-   * @param property the feature property name
-   * @param stops    the stops
-   * @param <I>      the function input type
-   * @param <O>      the function output type
-   * @return the {@link SourceFunction}
-   * @see SourceFunction
-   * @see IntervalStops
-   * @see Stops#interval(Stop[])
-   * @see Stop#stop
-   */
-  public static <I, O> SourceFunction<I, O> property(@NonNull String property, @NonNull IntervalStops<I, O> stops) {
-    return new SourceFunction<>(property, stops);
-  }
-
-  /**
-   * Create an categorical {@link SourceFunction}
-   * <p>
-   * Source functions allow the appearance of a map feature to change with
-   * its properties. Source functions can be used to visually differentiate
-   * types of features within the same layer or create data visualizations.
-   * Each stop is an array with two elements, the first is a property input
-   * value and the second is a function output value. Note that support for
-   * property functions is not available across all properties and platforms
-   * at this time.
-   *
-   * @param property the feature property name
-   * @param stops    the stops
-   * @param <I>      the function input type
-   * @param <O>      the function output type
-   * @return the {@link SourceFunction}
-   * @see SourceFunction
-   * @see CategoricalStops
-   * @see Stops#categorical(Stop[])
-   * @see Stop#stop
-   */
-  public static <I, O> SourceFunction<I, O> property(@NonNull String property, @NonNull CategoricalStops<I, O> stops) {
-    return new SourceFunction<>(property, stops);
-  }
-
-  /**
-   * Create a composite, categorical function.
-   * <p>
-   * Composite functions allow the appearance of a map feature to change with both its
-   * properties and zoom. Each stop is an array with two elements, the first is an object
-   * with a property input value and a zoom, and the second is a function output value. Note
-   * that support for property functions is not yet complete.
-   *
-   * @param property the feature property name for the source part of the function
-   * @param stops    the stops
-   * @param <Z>      the zoom function input type (Float usually)
-   * @param <I>      the function input type for the source part of the function
-   * @param <O>      the function output type
-   * @return the {@link CompositeFunction}
-   * @see CompositeFunction
-   * @see CategoricalStops
-   * @see Stops#categorical(Stop[])
-   * @see Stop#stop
-   */
-  public static <Z extends Number, I, O> CompositeFunction<Z, I, O> composite(
-    @NonNull String property,
-    @NonNull CategoricalStops<Stop.CompositeValue<Z, I>, O> stops) {
-
-    return new CompositeFunction<>(property, stops);
-  }
-
-  /**
-   * Create a composite, exponential function.
-   * <p>
-   * Composite functions allow the appearance of a map feature to change with both its
-   * properties and zoom. Each stop is an array with two elements, the first is an object
-   * with a property input value and a zoom, and the second is a function output value. Note
-   * that support for property functions is not yet complete.
-   *
-   * @param property the feature property name for the source part of the function
-   * @param stops    the stops
-   * @param <Z>      the zoom function input type (Float usually)
-   * @param <I>      the function input type for the source part of the function
-   * @param <O>      the function output type
-   * @return the {@link CompositeFunction}
-   * @see CompositeFunction
-   * @see ExponentialStops
-   * @see Stops#exponential(Stop[])
-   * @see Stop#stop
-   */
-  public static <Z extends Number, I, O> CompositeFunction<Z, I, O> composite(
-    @NonNull String property,
-    @NonNull ExponentialStops<Stop.CompositeValue<Z, I>, O> stops) {
-
-    return new CompositeFunction<>(property, stops);
-  }
-
-  /**
-   * Create a composite, interval function.
-   * <p>
-   * Composite functions allow the appearance of a map feature to change with both its
-   * properties and zoom. Each stop is an array with two elements, the first is an object
-   * with a property input value and a zoom, and the second is a function output value. Note
-   * that support for property functions is not yet complete.
-   *
-   * @param property the feature property name for the source part of the function
-   * @param stops    the stops
-   * @param <Z>      the zoom function input type (Float usually)
-   * @param <I>      the function input type for the source part of the function
-   * @param <O>      the function output type
-   * @return the {@link CompositeFunction}
-   * @see CompositeFunction
-   * @see IntervalStops
-   * @see Stops#interval(Stop[])
-   * @see Stop#stop
-   */
-  public static <Z extends Number, I, O> CompositeFunction<Z, I, O> composite(
-    @NonNull String property,
-    @NonNull IntervalStops<Stop.CompositeValue<Z, I>, O> stops) {
-
-    return new CompositeFunction<>(property, stops);
-  }
-
-  // Class definition //
-
-  private final Stops<I, O> stops;
-
-  /**
-   * JNI Cosntructor for implementation classes
-   *
-   * @param stops the stops
-   */
-  Function(@NonNull Stops<I, O> stops) {
-    this.stops = stops;
-  }
-
-  /**
-   * @return the stops in this function
-   */
-  public Stops getStops() {
-    return stops;
-  }
-
-  /**
-   * Convenience method
-   *
-   * @param <S> the Stops implementation type
-   * @return the Stops implementation or null when the wrong type is specified
-   */
-  @Nullable
-  public <S extends Stops> S getStopsAs() {
-    try {
-      // noinspection unchecked
-      return (S) stops;
-    } catch (ClassCastException exception) {
-      Timber.e(exception, "Stops: %s is a different type: ", stops.getClass());
-      return null;
-    }
-  }
-
-  /**
-   * INTERNAL USAGE ONLY
-   *
-   * @return a value object representation for core conversion
-   */
-  public Map<String, Object> toValueObject() {
-    return stops.toValueObject();
-  }
-
-  @Override
-  public String toString() {
-    return String.format("%s: %s", getClass().getSimpleName(), stops);
-  }
-}
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/SourceFunction.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/SourceFunction.java
deleted file mode 100644
index 33f436ae71..0000000000
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/SourceFunction.java
+++ /dev/null
@@ -1,85 +0,0 @@
-package com.mapbox.mapboxsdk.style.functions;
-
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-
-import com.mapbox.mapboxsdk.style.functions.stops.Stops;
-import com.mapbox.mapboxsdk.style.layers.PropertyValue;
-
-import java.util.Map;
-
-/**
- * Source functions take Feature property names as input.
- * <p>
- * Source functions allow the appearance of a map feature to change with
- * its properties. Source functions can be used to visually differentiate
- * types of features within the same layer or create data visualizations.
- * Each stop is an array with two elements, the first is a property input
- * value and the second is a function output value. Note that support for
- * property functions is not available across all properties and platforms
- * at this time.
- *
- * @param <I> the input type
- * @param <O> the output type
- * @see Function#property
- */
-public class SourceFunction<I, O> extends Function<I, O> {
-
-  private final String property;
-  private PropertyValue<O> defaultValue;
-
-  SourceFunction(@NonNull String property, @NonNull Stops<I, O> stops) {
-    this(null, property, stops);
-  }
-
-  /**
-   * JNI Constructor
-   */
-  private SourceFunction(@Nullable O defaultValue, @NonNull String property, @NonNull Stops<I, O> stops) {
-    super(stops);
-    this.property = property;
-    this.defaultValue = defaultValue != null ? new PropertyValue<>(property, defaultValue) : null;
-  }
-
-
-  /**
-   * INTERNAL USAGE ONLY
-   *
-   * @return The feature property name
-   */
-  public String getProperty() {
-    return property;
-  }
-
-  /**
-   * Set the default value
-   *
-   * @param defaultValue the default value to use when no other applies
-   * @return this (for chaining)
-   */
-  public SourceFunction<I, O> withDefaultValue(PropertyValue<O> defaultValue) {
-    this.defaultValue = defaultValue;
-    return this;
-  }
-
-  /**
-   * @return the defaultValue
-   */
-  @Nullable
-  public PropertyValue<O> getDefaultValue() {
-    return defaultValue;
-  }
-
-  /**
-   * {@inheritDoc}
-   */
-  @Override
-  public Map<String, Object> toValueObject() {
-    Map<String, Object> valueObject = super.toValueObject();
-    valueObject.put(PROPERTY_KEY, property);
-    if (defaultValue != null) {
-      valueObject.put(DEFAULT_VALUE_KEY, defaultValue.value);
-    }
-    return valueObject;
-  }
-}
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/package-info.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/package-info.java
deleted file mode 100644
index 6979676c9e..0000000000
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/package-info.java
+++ /dev/null
@@ -1,6 +0,0 @@
-/**
- * Contains the Mapbox Maps Android Style Function API classes.
- *
- * @see <a href="https://www.mapbox.com/mapbox-gl-style-spec/#types-function">The style specification</a>
- */
-package com.mapbox.mapboxsdk.style.functions;
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/CategoricalStops.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/CategoricalStops.java
deleted file mode 100644
index f9b2929350..0000000000
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/CategoricalStops.java
+++ /dev/null
@@ -1,64 +0,0 @@
-package com.mapbox.mapboxsdk.style.functions.stops;
-
-import android.support.annotation.NonNull;
-import android.support.annotation.Size;
-
-import java.util.Arrays;
-import java.util.Iterator;
-import java.util.Map;
-
-/**
- * {@link Stops} implementation for categorical functions
- *
- * @param <I> the {@link Stop} input type
- * @param <O> the {@link Stop} output type
- */
-public class CategoricalStops<I, O> extends IterableStops<I, O, Stop<I, O>> {
-
-  private final Stop<I, O>[] stops;
-
-  /**
-   * Create a categorical {@link Stops} implementation. Use through {@link Stops#categorical(Stop[])}
-   *
-   * @param stops the stops
-   */
-  @SafeVarargs
-  public CategoricalStops(@NonNull @Size(min = 1) Stop<I, O>... stops) {
-    this.stops = stops;
-  }
-
-  /**
-   * {@inheritDoc}
-   */
-  @Override
-  public Map<String, Object> toValueObject() {
-    Map<String, Object> map = super.toValueObject();
-    map.put("stops", toValueObjects(stops));
-    return map;
-  }
-
-  /**
-   * {@inheritDoc}
-   */
-  @Override
-  public String getTypeName() {
-    return "categorical";
-  }
-
-  /**
-   * {@inheritDoc}
-   */
-  @Override
-  public Iterator<Stop<I, O>> iterator() {
-    return Arrays.asList(stops).iterator();
-  }
-
-  /**
-   * {@inheritDoc}
-   */
-  @Override
-  public int size() {
-    return stops.length;
-  }
-
-}
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/ExponentialStops.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/ExponentialStops.java
deleted file mode 100644
index d47aa1fc91..0000000000
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/ExponentialStops.java
+++ /dev/null
@@ -1,97 +0,0 @@
-package com.mapbox.mapboxsdk.style.functions.stops;
-
-import android.support.annotation.NonNull;
-import android.support.annotation.Size;
-
-import java.util.Arrays;
-import java.util.Iterator;
-import java.util.Map;
-
-/**
- * The {@link Stops} implementation for exponential functions
- *
- * @param <I> the input type
- * @param <O> the output type
- */
-public class ExponentialStops<I, O> extends IterableStops<I, O, Stop<I, O>> {
-
-  private float base;
-  private final Stop<I, O>[] stops;
-
-  /**
-   * Create exponential stops with an explicit base. Use through {@link Stops#exponential(Stop[])}
-   *
-   * @param base  The exponential base of the interpolation curve. It controls the rate at which the function output
-   *              increases. Higher values make the output increase more towards the high end of the range.
-   *              With values close to 1 the output increases linearly.
-   * @param stops the stops
-   */
-  @SafeVarargs
-  public ExponentialStops(Float base, @NonNull @Size(min = 1) Stop<I, O>... stops) {
-    this.base = base != null ? base : 1.0f;
-    this.stops = stops;
-  }
-
-  /**
-   * Create exponential stops without an explicit base. Use through {@link Stops#exponential(Stop[])}
-   *
-   * @param stops the stops
-   */
-  @SafeVarargs
-  public ExponentialStops(@NonNull @Size(min = 1) Stop<I, O>... stops) {
-    this(null, stops);
-  }
-
-  /**
-   * Set the exponential base
-   *
-   * @param base the base to use in the exponential function
-   * @return this (for chaining)
-   */
-  public ExponentialStops<I, O> withBase(float base) {
-    this.base = base;
-    return this;
-  }
-
-  /**
-   * @return The exponential base
-   */
-  public float getBase() {
-    return base;
-  }
-
-  /**
-   * {@inheritDoc}
-   */
-  @Override
-  public Map<String, Object> toValueObject() {
-    Map<String, Object> map = super.toValueObject();
-    map.put("base", base);
-    map.put("stops", toValueObjects(stops));
-    return map;
-  }
-
-  /**
-   * {@inheritDoc}
-   */
-  @Override
-  public String getTypeName() {
-    return "exponential";
-  }
-
-  /**
-   * {@inheritDoc}
-   */
-  @Override
-  public Iterator<Stop<I, O>> iterator() {
-    return Arrays.asList(stops).iterator();
-  }
-
-  /**
-   * {@inheritDoc}
-   */
-  @Override
-  public int size() {
-    return stops.length;
-  }
-}
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/IdentityStops.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/IdentityStops.java
deleted file mode 100644
index 2c0b198dc2..0000000000
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/IdentityStops.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package com.mapbox.mapboxsdk.style.functions.stops;
-
-/**
- * The {@link Stops} implementation for identity functions
- *
- * @param <T> the input/output type
- */
-public class IdentityStops<T> extends Stops<T, T> {
-
-  /**
-   * {@inheritDoc}
-   */
-  @Override
-  protected String getTypeName() {
-    return "identity";
-  }
-
-}
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/IntervalStops.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/IntervalStops.java
deleted file mode 100644
index 9d95b3f8c1..0000000000
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/IntervalStops.java
+++ /dev/null
@@ -1,58 +0,0 @@
-package com.mapbox.mapboxsdk.style.functions.stops;
-
-import android.support.annotation.NonNull;
-import android.support.annotation.Size;
-
-import java.util.Arrays;
-import java.util.Iterator;
-import java.util.Map;
-
-/**
- * The {@link Stops} implementation for interval functions
- *
- * @param <I> the input type
- * @param <O> the output type
- */
-public class IntervalStops<I, O> extends IterableStops<I, O, Stop<I, O>> {
-
-  private final Stop<I, O>[] stops;
-
-  @SafeVarargs
-  public IntervalStops(@NonNull @Size(min = 1) Stop<I, O>... stops) {
-    this.stops = stops;
-  }
-
-  /**
-   * {@inheritDoc}
-   */
-  @Override
-  public String getTypeName() {
-    return "interval";
-  }
-
-  /**
-   * {@inheritDoc}
-   */
-  @Override
-  public Map<String, Object> toValueObject() {
-    Map<String, Object> map = super.toValueObject();
-    map.put("stops", toValueObjects(stops));
-    return map;
-  }
-
-  /**
-   * @return an {@link Iterator} for the contained stops
-   */
-  @Override
-  public Iterator<Stop<I, O>> iterator() {
-    return Arrays.asList(stops).iterator();
-  }
-
-  /**
-   * @return The number of contained stops
-   */
-  @Override
-  public int size() {
-    return stops.length;
-  }
-}
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/IterableStops.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/IterableStops.java
deleted file mode 100644
index 8c5a6e8913..0000000000
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/IterableStops.java
+++ /dev/null
@@ -1,52 +0,0 @@
-package com.mapbox.mapboxsdk.style.functions.stops;
-
-import java.util.Iterator;
-
-/**
- * Base class for {@link Stops} implementations with a collection of stops
- *
- * @param <I> the {@link Stops} input type
- * @param <O> the {@link Stops} output type
- * @param <S> the {@link Iterable} element type (usually {@link Stop})
- */
-public abstract class IterableStops<I, O, S> extends Stops<I, O> implements Iterable<S> {
-
-  /**
-   * @return The size of the contained stops collection
-   */
-  public abstract int size();
-
-  /**
-   * Convenience function to toValueObjects an array of stops to an array of value objects
-   *
-   * @param stops the stops to toValueObjects
-   * @return the stops as value objects
-   */
-  Object[] toValueObjects(Stop<I, O>[] stops) {
-    if (stops != null) {
-      Object[] stopsValue = new Object[stops.length];
-
-      for (int i = 0; i < stopsValue.length; i++) {
-        Stop stop = stops[i];
-        stopsValue[i] = stop.toValueObject();
-      }
-      return stopsValue;
-    }
-
-    return null;
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder buffer = new StringBuilder();
-    Iterator<S> iterator = iterator();
-    while (iterator.hasNext()) {
-      S stop = iterator.next();
-      buffer.append(stop);
-      if (iterator.hasNext()) {
-        buffer.append(",");
-      }
-    }
-    return String.format("%s: [%s]", super.toString(), buffer.toString());
-  }
-}
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/Stop.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/Stop.java
deleted file mode 100644
index 72164f4c4b..0000000000
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/Stop.java
+++ /dev/null
@@ -1,109 +0,0 @@
-package com.mapbox.mapboxsdk.style.functions.stops;
-
-import com.mapbox.mapboxsdk.style.functions.Function;
-import com.mapbox.mapboxsdk.style.layers.PropertyValue;
-
-import java.util.HashMap;
-import java.util.Map;
-
-/**
- * A stop represents a certain point in the range of this function
- *
- * @param <I> input the stop (function) input type
- * @param <O> output the stop (function) output type
- * @see <a href="https://www.mapbox.com/mapbox-gl-style-spec/#types-function">The style specification</a>
- */
-public class Stop<I, O> {
-  /**
-   * Creates a {@link Stop} to use in a {@link Function}
-   *
-   * @param in     the input for the stop
-   * @param output the output for the stop
-   * @param <I>    the input property type
-   * @param <O>    the output property type
-   * @return the {@link Stop}
-   */
-  public static <I, O> Stop<I, O> stop(I in, PropertyValue<O> output) {
-    return new Stop<>(in, output.value);
-  }
-
-  /**
-   * Create a composite {@link Stop} for use in a {@link com.mapbox.mapboxsdk.style.functions.CompositeFunction}
-   *
-   * @param zoom   the zoom input
-   * @param value  the feature property input
-   * @param output the output for the stop
-   * @param <Z>    the zoom type
-   * @param <I>    the feature property input type
-   * @param <O>    the output property type
-   * @return the {@link Stop}
-   * @see Function#composite(String, ExponentialStops)
-   */
-  public static <Z extends Number, I, O> Stop<Stop.CompositeValue<Z, I>, O> stop(Z zoom,
-                                                                                 I value,
-                                                                                 PropertyValue<O> output) {
-    return new Stop<>(new Stop.CompositeValue<>(zoom, value), output.value);
-  }
-
-  /**
-   * Represents a composite input value for composite functions (eg zoom and feature property value)
-   *
-   * @param <Z> the zoom input type (typically Float)
-   * @param <V> the feature property input type
-   */
-  public static class CompositeValue<Z extends Number, V> {
-    public final Z zoom;
-    public final V value;
-
-    CompositeValue(Z zoom, V value) {
-      this.zoom = zoom;
-      this.value = value;
-    }
-
-    /**
-     * INTERNAL USAGE ONLY
-     *
-     * @return the value object representation for core conversion
-     */
-    Map<String, Object> toValueObject() {
-      HashMap<String, Object> map = new HashMap<>();
-      map.put("zoom", zoom);
-      map.put("value", value);
-      return map;
-    }
-
-    @Override
-    public String toString() {
-      return String.format("[zoom: %s, value: %s]", zoom, value);
-    }
-  }
-
-  /**
-   * The input type
-   */
-  public final I in;
-
-  /**
-   * The output type
-   */
-  public final O out;
-
-  Stop(I in, O out) {
-    this.in = in;
-    this.out = out;
-  }
-
-  /**
-   * INTERNAL USAGE ONLY
-   *
-   * @return an array representation of the Stop
-   */
-  Object[] toValueObject() {
-    return new Object[] {in instanceof CompositeValue ? ((CompositeValue) in).toValueObject() : in, out};
-  }
-
-  @Override
-  public String toString() {
-    return String.format("[%s, %s]", in, out);
-  }
-}
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/Stops.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/Stops.java
deleted file mode 100644
index af4f53c072..0000000000
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/Stops.java
+++ /dev/null
@@ -1,99 +0,0 @@
-package com.mapbox.mapboxsdk.style.functions.stops;
-
-import android.support.annotation.CallSuper;
-import android.support.annotation.NonNull;
-import android.support.annotation.Size;
-
-import java.util.HashMap;
-import java.util.Map;
-
-/**
- * The base class for different stops implementations
- *
- * @param <I> the input type
- * @param <O> the output type
- * @see <a href="https://www.mapbox.com/mapbox-gl-style-spec/#types-function">The style specification</a>
- */
-public abstract class Stops<I, O> {
-
-  /**
-   * Convenience method for use in function declarations
-   *
-   * @param stops the collections of discrete stops
-   * @param <I>   the Stops input type
-   * @param <O>   the Stops output type
-   * @return the {@link Stops} implementation
-   * @see Stop#stop
-   * @see CategoricalStops
-   */
-  @SafeVarargs
-  public static <I, O> CategoricalStops<I, O> categorical(@NonNull @Size(min = 1) Stop<I, O>... stops) {
-    return new CategoricalStops<>(stops);
-  }
-
-  /**
-   * Convenience method for use in function declarations
-   *
-   * @param stops the collections of discrete stops
-   * @param <I>   the Stops input type
-   * @param <O>   the Stops output type
-   * @return the {@link Stops} implementation
-   * @see Stop#stop
-   * @see ExponentialStops
-   */
-  @SafeVarargs
-  public static <I, O> ExponentialStops<I, O> exponential(@NonNull @Size(min = 1) Stop<I, O>... stops) {
-    return new ExponentialStops<>(stops);
-  }
-
-  /**
-   * Convenience method for use in function declarations
-   *
-   * @param <T> the Stops input/output type
-   * @return the {@link IdentityStops} implementation
-   * @see Stop#stop
-   * @see IdentityStops
-   */
-  public static <T> IdentityStops<T> identity() {
-    return new IdentityStops<>();
-  }
-
-  /**
-   * Convenience method for use in function declarations
-   *
-   * @param stops the collections of discrete stops
-   * @param <I>   the Stops input type
-   * @param <O>   the Stops output type
-   * @return the {@link Stops} implementation
-   * @see Stop#stop
-   * @see IntervalStops
-   */
-  @SafeVarargs
-  public static <I, O> IntervalStops<I, O> interval(@NonNull @Size(min = 1) Stop<I, O>... stops) {
-    return new IntervalStops<>(stops);
-  }
-
-  /**
-   * INTERNAL USAGE ONLY
-   *
-   * @return the value object representation for conversion to core
-   */
-  @CallSuper
-  public Map<String, Object> toValueObject() {
-    HashMap<String, Object> map = new HashMap<>();
-    map.put("type", getTypeName());
-    return map;
-  }
-
-  /**
-   * INTERNAL USAGE ONLY
-   *
-   * @return the unique type name as a string according to the style specification
-   */
-  protected abstract String getTypeName();
-
-  @Override
-  public String toString() {
-    return getTypeName();
-  }
-}
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/package-info.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/package-info.java
deleted file mode 100644
index fa388a9589..0000000000
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/functions/stops/package-info.java
+++ /dev/null
@@ -1,6 +0,0 @@
-/**
- * Contains the Mapbox Maps Android Style Function Stop implementation API classes.
- *
- * @see <a href="https://www.mapbox.com/mapbox-gl-style-spec/#types-function">The style specification</a>
- */
-package com.mapbox.mapboxsdk.style.functions.stops;
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/Layer.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/Layer.java
index 5400e04589..66db88bafb 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/Layer.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/Layer.java
@@ -3,7 +3,6 @@ package com.mapbox.mapboxsdk.style.layers;
 import android.support.annotation.NonNull;
 
 import com.mapbox.mapboxsdk.style.expressions.Expression;
-import com.mapbox.mapboxsdk.style.functions.Function;
 
 /**
  * Base class for the different Layer types
@@ -89,12 +88,8 @@ public abstract class Layer {
   }
 
   private Object convertValue(Object value) {
-    if (value != null) {
-      if (value instanceof Function) {
-        return ((Function) value).toValueObject();
-      } else if (value instanceof Expression) {
-        return ((Expression) value).toArray();
-      }
+    if (value != null && value instanceof Expression) {
+      return ((Expression) value).toArray();
     }
     return value;
   }
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/PropertyFactory.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/PropertyFactory.java
index 43f5be98cb..66d78a40e5 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/PropertyFactory.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/PropertyFactory.java
@@ -4,9 +4,7 @@ package com.mapbox.mapboxsdk.style.layers;
 
 import android.support.annotation.ColorInt;
 
-import com.mapbox.mapboxsdk.style.functions.CameraFunction;
 import com.mapbox.mapboxsdk.style.expressions.Expression;
-import com.mapbox.mapboxsdk.style.functions.Function;
 
 import java.util.Locale;
 
@@ -28,18 +26,6 @@ public class PropertyFactory {
   }
 
   /**
-   * Set the property visibility.
-   *
-   * @param <T> the function input type
-   * @param function the visibility function
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, String>> visibility(Function<T, String> function) {
-    return new LayoutPropertyValue<>("visibility", function);
-  }
-
-  /**
    * Whether or not the fill should be antialiased.
    *
    * @param value a Boolean value
@@ -59,19 +45,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("fill-antialias", expression);
   }
 
-
-  /**
-   * Whether or not the fill should be antialiased.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Boolean
-   * @return property wrapper around a Boolean function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Boolean>> fillAntialias(CameraFunction<Z, Boolean> function) {
-    return new PaintPropertyValue<>("fill-antialias", function);
-  }
-
   /**
    * The opacity of the entire fill layer. In contrast to the {@link PropertyFactory#fillColor}, this value will also affect the 1px stroke around the fill, if the stroke is used.
    *
@@ -92,19 +65,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("fill-opacity", expression);
   }
 
-
-  /**
-   * The opacity of the entire fill layer. In contrast to the {@link PropertyFactory#fillColor}, this value will also affect the 1px stroke around the fill, if the stroke is used.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> fillOpacity(Function<T, Float> function) {
-    return new PaintPropertyValue<>("fill-opacity", function);
-  }
-
   /**
    * The color of the filled part of this layer. This color can be specified as `rgba` with an alpha component and the color's opacity will not affect the opacity of the 1px stroke, if it is used.
    *
@@ -135,19 +95,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("fill-color", expression);
   }
 
-
-  /**
-   * The color of the filled part of this layer. This color can be specified as `rgba` with an alpha component and the color's opacity will not affect the opacity of the 1px stroke, if it is used.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, String>> fillColor(Function<T, String> function) {
-    return new PaintPropertyValue<>("fill-color", function);
-  }
-
   /**
    * The outline color of the fill. Matches the value of {@link PropertyFactory#fillColor} if unspecified.
    *
@@ -178,19 +125,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("fill-outline-color", expression);
   }
 
-
-  /**
-   * The outline color of the fill. Matches the value of {@link PropertyFactory#fillColor} if unspecified.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, String>> fillOutlineColor(Function<T, String> function) {
-    return new PaintPropertyValue<>("fill-outline-color", function);
-  }
-
   /**
    * The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.
    *
@@ -211,19 +145,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("fill-translate", expression);
   }
 
-
-  /**
-   * The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float[]
-   * @return property wrapper around a Float[] function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float[]>> fillTranslate(CameraFunction<Z, Float[]> function) {
-    return new PaintPropertyValue<>("fill-translate", function);
-  }
-
   /**
    * Controls the frame of reference for {@link PropertyFactory#fillTranslate}.
    *
@@ -244,19 +165,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("fill-translate-anchor", expression);
   }
 
-
-  /**
-   * Controls the frame of reference for {@link PropertyFactory#fillTranslate}.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> fillTranslateAnchor(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("fill-translate-anchor", function);
-  }
-
   /**
    * Name of image in sprite to use for drawing image fills. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512).
    *
@@ -277,19 +185,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("fill-pattern", expression);
   }
 
-
-  /**
-   * Name of image in sprite to use for drawing image fills. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512).
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> fillPattern(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("fill-pattern", function);
-  }
-
   /**
    * The opacity at which the line will be drawn.
    *
@@ -310,19 +205,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("line-opacity", expression);
   }
 
-
-  /**
-   * The opacity at which the line will be drawn.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> lineOpacity(Function<T, Float> function) {
-    return new PaintPropertyValue<>("line-opacity", function);
-  }
-
   /**
    * The color with which the line will be drawn.
    *
@@ -353,19 +235,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("line-color", expression);
   }
 
-
-  /**
-   * The color with which the line will be drawn.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, String>> lineColor(Function<T, String> function) {
-    return new PaintPropertyValue<>("line-color", function);
-  }
-
   /**
    * The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.
    *
@@ -386,19 +255,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("line-translate", expression);
   }
 
-
-  /**
-   * The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float[]
-   * @return property wrapper around a Float[] function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float[]>> lineTranslate(CameraFunction<Z, Float[]> function) {
-    return new PaintPropertyValue<>("line-translate", function);
-  }
-
   /**
    * Controls the frame of reference for {@link PropertyFactory#lineTranslate}.
    *
@@ -419,19 +275,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("line-translate-anchor", expression);
   }
 
-
-  /**
-   * Controls the frame of reference for {@link PropertyFactory#lineTranslate}.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> lineTranslateAnchor(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("line-translate-anchor", function);
-  }
-
   /**
    * Stroke thickness.
    *
@@ -452,19 +295,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("line-width", expression);
   }
 
-
-  /**
-   * Stroke thickness.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> lineWidth(Function<T, Float> function) {
-    return new PaintPropertyValue<>("line-width", function);
-  }
-
   /**
    * Draws a line casing outside of a line's actual path. Value indicates the width of the inner gap.
    *
@@ -485,19 +315,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("line-gap-width", expression);
   }
 
-
-  /**
-   * Draws a line casing outside of a line's actual path. Value indicates the width of the inner gap.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> lineGapWidth(Function<T, Float> function) {
-    return new PaintPropertyValue<>("line-gap-width", function);
-  }
-
   /**
    * The line's offset. For linear features, a positive value offsets the line to the right, relative to the direction of the line, and a negative value to the left. For polygon features, a positive value results in an inset, and a negative value results in an outset.
    *
@@ -518,19 +335,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("line-offset", expression);
   }
 
-
-  /**
-   * The line's offset. For linear features, a positive value offsets the line to the right, relative to the direction of the line, and a negative value to the left. For polygon features, a positive value results in an inset, and a negative value results in an outset.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> lineOffset(Function<T, Float> function) {
-    return new PaintPropertyValue<>("line-offset", function);
-  }
-
   /**
    * Blur applied to the line, in density-independent pixels.
    *
@@ -551,19 +355,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("line-blur", expression);
   }
 
-
-  /**
-   * Blur applied to the line, in density-independent pixels.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> lineBlur(Function<T, Float> function) {
-    return new PaintPropertyValue<>("line-blur", function);
-  }
-
   /**
    * Specifies the lengths of the alternating dashes and gaps that form the dash pattern. The lengths are later scaled by the line width. To convert a dash length to density-independent pixels, multiply the length by the current line width.
    *
@@ -584,19 +375,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("line-dasharray", expression);
   }
 
-
-  /**
-   * Specifies the lengths of the alternating dashes and gaps that form the dash pattern. The lengths are later scaled by the line width. To convert a dash length to density-independent pixels, multiply the length by the current line width.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float[]
-   * @return property wrapper around a Float[] function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float[]>> lineDasharray(CameraFunction<Z, Float[]> function) {
-    return new PaintPropertyValue<>("line-dasharray", function);
-  }
-
   /**
    * Name of image in sprite to use for drawing image lines. For seamless patterns, image width must be a factor of two (2, 4, 8, ..., 512).
    *
@@ -617,19 +395,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("line-pattern", expression);
   }
 
-
-  /**
-   * Name of image in sprite to use for drawing image lines. For seamless patterns, image width must be a factor of two (2, 4, 8, ..., 512).
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> linePattern(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("line-pattern", function);
-  }
-
   /**
    * The opacity at which the icon will be drawn.
    *
@@ -650,19 +415,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("icon-opacity", expression);
   }
 
-
-  /**
-   * The opacity at which the icon will be drawn.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> iconOpacity(Function<T, Float> function) {
-    return new PaintPropertyValue<>("icon-opacity", function);
-  }
-
   /**
    * The color of the icon. This can only be used with sdf icons.
    *
@@ -693,19 +445,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("icon-color", expression);
   }
 
-
-  /**
-   * The color of the icon. This can only be used with sdf icons.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, String>> iconColor(Function<T, String> function) {
-    return new PaintPropertyValue<>("icon-color", function);
-  }
-
   /**
    * The color of the icon's halo. Icon halos can only be used with SDF icons.
    *
@@ -736,19 +475,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("icon-halo-color", expression);
   }
 
-
-  /**
-   * The color of the icon's halo. Icon halos can only be used with SDF icons.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, String>> iconHaloColor(Function<T, String> function) {
-    return new PaintPropertyValue<>("icon-halo-color", function);
-  }
-
   /**
    * Distance of halo to the icon outline.
    *
@@ -769,19 +495,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("icon-halo-width", expression);
   }
 
-
-  /**
-   * Distance of halo to the icon outline.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> iconHaloWidth(Function<T, Float> function) {
-    return new PaintPropertyValue<>("icon-halo-width", function);
-  }
-
   /**
    * Fade out the halo towards the outside.
    *
@@ -802,19 +515,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("icon-halo-blur", expression);
   }
 
-
-  /**
-   * Fade out the halo towards the outside.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> iconHaloBlur(Function<T, Float> function) {
-    return new PaintPropertyValue<>("icon-halo-blur", function);
-  }
-
   /**
    * Distance that the icon's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.
    *
@@ -835,19 +535,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("icon-translate", expression);
   }
 
-
-  /**
-   * Distance that the icon's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float[]
-   * @return property wrapper around a Float[] function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float[]>> iconTranslate(CameraFunction<Z, Float[]> function) {
-    return new PaintPropertyValue<>("icon-translate", function);
-  }
-
   /**
    * Controls the frame of reference for {@link PropertyFactory#iconTranslate}.
    *
@@ -868,19 +555,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("icon-translate-anchor", expression);
   }
 
-
-  /**
-   * Controls the frame of reference for {@link PropertyFactory#iconTranslate}.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> iconTranslateAnchor(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("icon-translate-anchor", function);
-  }
-
   /**
    * The opacity at which the text will be drawn.
    *
@@ -901,19 +575,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("text-opacity", expression);
   }
 
-
-  /**
-   * The opacity at which the text will be drawn.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> textOpacity(Function<T, Float> function) {
-    return new PaintPropertyValue<>("text-opacity", function);
-  }
-
   /**
    * The color with which the text will be drawn.
    *
@@ -944,19 +605,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("text-color", expression);
   }
 
-
-  /**
-   * The color with which the text will be drawn.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, String>> textColor(Function<T, String> function) {
-    return new PaintPropertyValue<>("text-color", function);
-  }
-
   /**
    * The color of the text's halo, which helps it stand out from backgrounds.
    *
@@ -987,19 +635,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("text-halo-color", expression);
   }
 
-
-  /**
-   * The color of the text's halo, which helps it stand out from backgrounds.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, String>> textHaloColor(Function<T, String> function) {
-    return new PaintPropertyValue<>("text-halo-color", function);
-  }
-
   /**
    * Distance of halo to the font outline. Max text halo width is 1/4 of the font-size.
    *
@@ -1020,19 +655,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("text-halo-width", expression);
   }
 
-
-  /**
-   * Distance of halo to the font outline. Max text halo width is 1/4 of the font-size.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> textHaloWidth(Function<T, Float> function) {
-    return new PaintPropertyValue<>("text-halo-width", function);
-  }
-
   /**
    * The halo's fadeout distance towards the outside.
    *
@@ -1053,19 +675,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("text-halo-blur", expression);
   }
 
-
-  /**
-   * The halo's fadeout distance towards the outside.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> textHaloBlur(Function<T, Float> function) {
-    return new PaintPropertyValue<>("text-halo-blur", function);
-  }
-
   /**
    * Distance that the text's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.
    *
@@ -1086,19 +695,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("text-translate", expression);
   }
 
-
-  /**
-   * Distance that the text's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float[]
-   * @return property wrapper around a Float[] function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float[]>> textTranslate(CameraFunction<Z, Float[]> function) {
-    return new PaintPropertyValue<>("text-translate", function);
-  }
-
   /**
    * Controls the frame of reference for {@link PropertyFactory#textTranslate}.
    *
@@ -1119,19 +715,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("text-translate-anchor", expression);
   }
 
-
-  /**
-   * Controls the frame of reference for {@link PropertyFactory#textTranslate}.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> textTranslateAnchor(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("text-translate-anchor", function);
-  }
-
   /**
    * Circle radius.
    *
@@ -1152,19 +735,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("circle-radius", expression);
   }
 
-
-  /**
-   * Circle radius.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> circleRadius(Function<T, Float> function) {
-    return new PaintPropertyValue<>("circle-radius", function);
-  }
-
   /**
    * The fill color of the circle.
    *
@@ -1195,19 +765,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("circle-color", expression);
   }
 
-
-  /**
-   * The fill color of the circle.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, String>> circleColor(Function<T, String> function) {
-    return new PaintPropertyValue<>("circle-color", function);
-  }
-
   /**
    * Amount to blur the circle. 1 blurs the circle such that only the centerpoint is full opacity.
    *
@@ -1228,19 +785,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("circle-blur", expression);
   }
 
-
-  /**
-   * Amount to blur the circle. 1 blurs the circle such that only the centerpoint is full opacity.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> circleBlur(Function<T, Float> function) {
-    return new PaintPropertyValue<>("circle-blur", function);
-  }
-
   /**
    * The opacity at which the circle will be drawn.
    *
@@ -1261,19 +805,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("circle-opacity", expression);
   }
 
-
-  /**
-   * The opacity at which the circle will be drawn.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> circleOpacity(Function<T, Float> function) {
-    return new PaintPropertyValue<>("circle-opacity", function);
-  }
-
   /**
    * The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.
    *
@@ -1294,19 +825,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("circle-translate", expression);
   }
 
-
-  /**
-   * The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float[]
-   * @return property wrapper around a Float[] function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float[]>> circleTranslate(CameraFunction<Z, Float[]> function) {
-    return new PaintPropertyValue<>("circle-translate", function);
-  }
-
   /**
    * Controls the frame of reference for {@link PropertyFactory#circleTranslate}.
    *
@@ -1327,19 +845,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("circle-translate-anchor", expression);
   }
 
-
-  /**
-   * Controls the frame of reference for {@link PropertyFactory#circleTranslate}.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> circleTranslateAnchor(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("circle-translate-anchor", function);
-  }
-
   /**
    * Controls the scaling behavior of the circle when the map is pitched.
    *
@@ -1360,19 +865,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("circle-pitch-scale", expression);
   }
 
-
-  /**
-   * Controls the scaling behavior of the circle when the map is pitched.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> circlePitchScale(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("circle-pitch-scale", function);
-  }
-
   /**
    * Orientation of circle when map is pitched.
    *
@@ -1393,19 +885,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("circle-pitch-alignment", expression);
   }
 
-
-  /**
-   * Orientation of circle when map is pitched.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> circlePitchAlignment(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("circle-pitch-alignment", function);
-  }
-
   /**
    * The width of the circle's stroke. Strokes are placed outside of the {@link PropertyFactory#circleRadius}.
    *
@@ -1426,19 +905,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("circle-stroke-width", expression);
   }
 
-
-  /**
-   * The width of the circle's stroke. Strokes are placed outside of the {@link PropertyFactory#circleRadius}.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> circleStrokeWidth(Function<T, Float> function) {
-    return new PaintPropertyValue<>("circle-stroke-width", function);
-  }
-
   /**
    * The stroke color of the circle.
    *
@@ -1469,19 +935,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("circle-stroke-color", expression);
   }
 
-
-  /**
-   * The stroke color of the circle.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, String>> circleStrokeColor(Function<T, String> function) {
-    return new PaintPropertyValue<>("circle-stroke-color", function);
-  }
-
   /**
    * The opacity of the circle's stroke.
    *
@@ -1502,19 +955,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("circle-stroke-opacity", expression);
   }
 
-
-  /**
-   * The opacity of the circle's stroke.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> circleStrokeOpacity(Function<T, Float> function) {
-    return new PaintPropertyValue<>("circle-stroke-opacity", function);
-  }
-
   /**
    * Radius of influence of one heatmap point in density-independent pixels. Increasing the value makes the heatmap smoother, but less detailed.
    *
@@ -1535,19 +975,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("heatmap-radius", expression);
   }
 
-
-  /**
-   * Radius of influence of one heatmap point in density-independent pixels. Increasing the value makes the heatmap smoother, but less detailed.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> heatmapRadius(Function<T, Float> function) {
-    return new PaintPropertyValue<>("heatmap-radius", function);
-  }
-
   /**
    * A measure of how much an individual point contributes to the heatmap. A value of 10 would be equivalent to having 10 points of weight 1 in the same spot. Especially useful when combined with clustering.
    *
@@ -1568,19 +995,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("heatmap-weight", expression);
   }
 
-
-  /**
-   * A measure of how much an individual point contributes to the heatmap. A value of 10 would be equivalent to having 10 points of weight 1 in the same spot. Especially useful when combined with clustering.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> heatmapWeight(Function<T, Float> function) {
-    return new PaintPropertyValue<>("heatmap-weight", function);
-  }
-
   /**
    * Similar to {@link PropertyFactory#heatmapWeight} but controls the intensity of the heatmap globally. Primarily used for adjusting the heatmap based on zoom level.
    *
@@ -1601,19 +1015,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("heatmap-intensity", expression);
   }
 
-
-  /**
-   * Similar to {@link PropertyFactory#heatmapWeight} but controls the intensity of the heatmap globally. Primarily used for adjusting the heatmap based on zoom level.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> heatmapIntensity(CameraFunction<Z, Float> function) {
-    return new PaintPropertyValue<>("heatmap-intensity", function);
-  }
-
   /**
    * Defines the color of each pixel based on its density value in a heatmap.  Should be an expression that uses `["heatmap-density"]` as input.
    *
@@ -1664,19 +1065,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("heatmap-opacity", expression);
   }
 
-
-  /**
-   * The global opacity at which the heatmap layer will be drawn.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> heatmapOpacity(CameraFunction<Z, Float> function) {
-    return new PaintPropertyValue<>("heatmap-opacity", function);
-  }
-
   /**
    * The opacity of the entire fill extrusion layer. This is rendered on a per-layer, not per-feature, basis, and data-driven styling is not available.
    *
@@ -1697,19 +1085,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("fill-extrusion-opacity", expression);
   }
 
-
-  /**
-   * The opacity of the entire fill extrusion layer. This is rendered on a per-layer, not per-feature, basis, and data-driven styling is not available.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> fillExtrusionOpacity(CameraFunction<Z, Float> function) {
-    return new PaintPropertyValue<>("fill-extrusion-opacity", function);
-  }
-
   /**
    * The base color of the extruded fill. The extrusion's surfaces will be shaded differently based on this color in combination with the root `light` settings. If this color is specified as `rgba` with an alpha component, the alpha component will be ignored; use {@link PropertyFactory#fillExtrusionOpacity} to set layer opacity.
    *
@@ -1740,19 +1115,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("fill-extrusion-color", expression);
   }
 
-
-  /**
-   * The base color of the extruded fill. The extrusion's surfaces will be shaded differently based on this color in combination with the root `light` settings. If this color is specified as `rgba` with an alpha component, the alpha component will be ignored; use {@link PropertyFactory#fillExtrusionOpacity} to set layer opacity.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, String>> fillExtrusionColor(Function<T, String> function) {
-    return new PaintPropertyValue<>("fill-extrusion-color", function);
-  }
-
   /**
    * The geometry's offset. Values are [x, y] where negatives indicate left and up (on the flat plane), respectively.
    *
@@ -1773,19 +1135,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("fill-extrusion-translate", expression);
   }
 
-
-  /**
-   * The geometry's offset. Values are [x, y] where negatives indicate left and up (on the flat plane), respectively.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float[]
-   * @return property wrapper around a Float[] function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float[]>> fillExtrusionTranslate(CameraFunction<Z, Float[]> function) {
-    return new PaintPropertyValue<>("fill-extrusion-translate", function);
-  }
-
   /**
    * Controls the frame of reference for {@link PropertyFactory#fillExtrusionTranslate}.
    *
@@ -1806,19 +1155,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("fill-extrusion-translate-anchor", expression);
   }
 
-
-  /**
-   * Controls the frame of reference for {@link PropertyFactory#fillExtrusionTranslate}.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> fillExtrusionTranslateAnchor(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("fill-extrusion-translate-anchor", function);
-  }
-
   /**
    * Name of image in sprite to use for drawing images on extruded fills. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512).
    *
@@ -1839,19 +1175,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("fill-extrusion-pattern", expression);
   }
 
-
-  /**
-   * Name of image in sprite to use for drawing images on extruded fills. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512).
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> fillExtrusionPattern(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("fill-extrusion-pattern", function);
-  }
-
   /**
    * The height with which to extrude this layer.
    *
@@ -1872,19 +1195,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("fill-extrusion-height", expression);
   }
 
-
-  /**
-   * The height with which to extrude this layer.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> fillExtrusionHeight(Function<T, Float> function) {
-    return new PaintPropertyValue<>("fill-extrusion-height", function);
-  }
-
   /**
    * The height with which to extrude the base of this layer. Must be less than or equal to {@link PropertyFactory#fillExtrusionHeight}.
    *
@@ -1905,19 +1215,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("fill-extrusion-base", expression);
   }
 
-
-  /**
-   * The height with which to extrude the base of this layer. Must be less than or equal to {@link PropertyFactory#fillExtrusionHeight}.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, Float>> fillExtrusionBase(Function<T, Float> function) {
-    return new PaintPropertyValue<>("fill-extrusion-base", function);
-  }
-
   /**
    * The opacity at which the image will be drawn.
    *
@@ -1938,19 +1235,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("raster-opacity", expression);
   }
 
-
-  /**
-   * The opacity at which the image will be drawn.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> rasterOpacity(CameraFunction<Z, Float> function) {
-    return new PaintPropertyValue<>("raster-opacity", function);
-  }
-
   /**
    * Rotates hues around the color wheel.
    *
@@ -1971,19 +1255,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("raster-hue-rotate", expression);
   }
 
-
-  /**
-   * Rotates hues around the color wheel.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> rasterHueRotate(CameraFunction<Z, Float> function) {
-    return new PaintPropertyValue<>("raster-hue-rotate", function);
-  }
-
   /**
    * Increase or reduce the brightness of the image. The value is the minimum brightness.
    *
@@ -2004,19 +1275,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("raster-brightness-min", expression);
   }
 
-
-  /**
-   * Increase or reduce the brightness of the image. The value is the minimum brightness.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> rasterBrightnessMin(CameraFunction<Z, Float> function) {
-    return new PaintPropertyValue<>("raster-brightness-min", function);
-  }
-
   /**
    * Increase or reduce the brightness of the image. The value is the maximum brightness.
    *
@@ -2037,19 +1295,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("raster-brightness-max", expression);
   }
 
-
-  /**
-   * Increase or reduce the brightness of the image. The value is the maximum brightness.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> rasterBrightnessMax(CameraFunction<Z, Float> function) {
-    return new PaintPropertyValue<>("raster-brightness-max", function);
-  }
-
   /**
    * Increase or reduce the saturation of the image.
    *
@@ -2070,19 +1315,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("raster-saturation", expression);
   }
 
-
-  /**
-   * Increase or reduce the saturation of the image.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> rasterSaturation(CameraFunction<Z, Float> function) {
-    return new PaintPropertyValue<>("raster-saturation", function);
-  }
-
   /**
    * Increase or reduce the contrast of the image.
    *
@@ -2103,19 +1335,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("raster-contrast", expression);
   }
 
-
-  /**
-   * Increase or reduce the contrast of the image.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> rasterContrast(CameraFunction<Z, Float> function) {
-    return new PaintPropertyValue<>("raster-contrast", function);
-  }
-
   /**
    * Fade duration when a new tile is added.
    *
@@ -2136,19 +1355,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("raster-fade-duration", expression);
   }
 
-
-  /**
-   * Fade duration when a new tile is added.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> rasterFadeDuration(CameraFunction<Z, Float> function) {
-    return new PaintPropertyValue<>("raster-fade-duration", function);
-  }
-
   /**
    * The direction of the light source used to generate the hillshading with 0 as the top of the viewport if {@link Property.HILLSHADE_ILLUMINATION_ANCHOR} is set to `viewport` and due north if {@link Property.HILLSHADE_ILLUMINATION_ANCHOR} is set to `map`.
    *
@@ -2169,19 +1375,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("hillshade-illumination-direction", expression);
   }
 
-
-  /**
-   * The direction of the light source used to generate the hillshading with 0 as the top of the viewport if {@link Property.HILLSHADE_ILLUMINATION_ANCHOR} is set to `viewport` and due north if {@link Property.HILLSHADE_ILLUMINATION_ANCHOR} is set to `map`.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> hillshadeIlluminationDirection(CameraFunction<Z, Float> function) {
-    return new PaintPropertyValue<>("hillshade-illumination-direction", function);
-  }
-
   /**
    * Direction of light source when map is rotated.
    *
@@ -2202,19 +1395,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("hillshade-illumination-anchor", expression);
   }
 
-
-  /**
-   * Direction of light source when map is rotated.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> hillshadeIlluminationAnchor(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("hillshade-illumination-anchor", function);
-  }
-
   /**
    * Intensity of the hillshade
    *
@@ -2235,19 +1415,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("hillshade-exaggeration", expression);
   }
 
-
-  /**
-   * Intensity of the hillshade
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> hillshadeExaggeration(CameraFunction<Z, Float> function) {
-    return new PaintPropertyValue<>("hillshade-exaggeration", function);
-  }
-
   /**
    * The shading color of areas that face away from the light source.
    *
@@ -2278,19 +1445,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("hillshade-shadow-color", expression);
   }
 
-
-  /**
-   * The shading color of areas that face away from the light source.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> hillshadeShadowColor(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("hillshade-shadow-color", function);
-  }
-
   /**
    * The shading color of areas that faces towards the light source.
    *
@@ -2321,19 +1475,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("hillshade-highlight-color", expression);
   }
 
-
-  /**
-   * The shading color of areas that faces towards the light source.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> hillshadeHighlightColor(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("hillshade-highlight-color", function);
-  }
-
   /**
    * The shading color used to accentuate rugged terrain like sharp cliffs and gorges.
    *
@@ -2364,19 +1505,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("hillshade-accent-color", expression);
   }
 
-
-  /**
-   * The shading color used to accentuate rugged terrain like sharp cliffs and gorges.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> hillshadeAccentColor(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("hillshade-accent-color", function);
-  }
-
   /**
    * The color with which the background will be drawn.
    *
@@ -2407,19 +1535,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("background-color", expression);
   }
 
-
-  /**
-   * The color with which the background will be drawn.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> backgroundColor(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("background-color", function);
-  }
-
   /**
    * Name of image in sprite to use for drawing an image background. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512).
    *
@@ -2440,19 +1555,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("background-pattern", expression);
   }
 
-
-  /**
-   * Name of image in sprite to use for drawing an image background. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512).
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> backgroundPattern(CameraFunction<Z, String> function) {
-    return new PaintPropertyValue<>("background-pattern", function);
-  }
-
   /**
    * The opacity at which the background will be drawn.
    *
@@ -2473,19 +1575,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("background-opacity", expression);
   }
 
-
-  /**
-   * The opacity at which the background will be drawn.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> backgroundOpacity(CameraFunction<Z, Float> function) {
-    return new PaintPropertyValue<>("background-opacity", function);
-  }
-
   /**
    * The display of line endings.
    *
@@ -2506,18 +1595,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("line-cap", value);
   }
 
-
-  /**
-   * The display of line endings.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> lineCap(CameraFunction<Z, String> function) {
-    return new LayoutPropertyValue<>("line-cap", function);
-  }
-
   /**
    * The display of lines when joining.
    *
@@ -2538,18 +1615,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("line-join", value);
   }
 
-
-  /**
-   * The display of lines when joining.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  public static <T> PropertyValue<Function<T, String>> lineJoin(Function<T, String> function) {
-    return new LayoutPropertyValue<>("line-join", function);
-  }
-
   /**
    * Used to automatically convert miter joins to bevel joins for sharp angles.
    *
@@ -2570,18 +1635,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("line-miter-limit", value);
   }
 
-
-  /**
-   * Used to automatically convert miter joins to bevel joins for sharp angles.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> lineMiterLimit(CameraFunction<Z, Float> function) {
-    return new LayoutPropertyValue<>("line-miter-limit", function);
-  }
-
   /**
    * Used to automatically convert round joins to miter joins for shallow angles.
    *
@@ -2602,18 +1655,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("line-round-limit", value);
   }
 
-
-  /**
-   * Used to automatically convert round joins to miter joins for shallow angles.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> lineRoundLimit(CameraFunction<Z, Float> function) {
-    return new LayoutPropertyValue<>("line-round-limit", function);
-  }
-
   /**
    * Label placement relative to its geometry.
    *
@@ -2634,18 +1675,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("symbol-placement", value);
   }
 
-
-  /**
-   * Label placement relative to its geometry.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> symbolPlacement(CameraFunction<Z, String> function) {
-    return new LayoutPropertyValue<>("symbol-placement", function);
-  }
-
   /**
    * Distance between two symbol anchors.
    *
@@ -2666,18 +1695,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("symbol-spacing", value);
   }
 
-
-  /**
-   * Distance between two symbol anchors.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> symbolSpacing(CameraFunction<Z, Float> function) {
-    return new LayoutPropertyValue<>("symbol-spacing", function);
-  }
-
   /**
    * If true, the symbols will not cross tile edges to avoid mutual collisions. Recommended in layers that don't have enough padding in the vector tile to prevent collisions, or if it is a point symbol layer placed after a line symbol layer.
    *
@@ -2698,18 +1715,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("symbol-avoid-edges", value);
   }
 
-
-  /**
-   * If true, the symbols will not cross tile edges to avoid mutual collisions. Recommended in layers that don't have enough padding in the vector tile to prevent collisions, or if it is a point symbol layer placed after a line symbol layer.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Boolean
-   * @return property wrapper around a Boolean function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Boolean>> symbolAvoidEdges(CameraFunction<Z, Boolean> function) {
-    return new LayoutPropertyValue<>("symbol-avoid-edges", function);
-  }
-
   /**
    * If true, the icon will be visible even if it collides with other previously drawn symbols.
    *
@@ -2730,18 +1735,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("icon-allow-overlap", value);
   }
 
-
-  /**
-   * If true, the icon will be visible even if it collides with other previously drawn symbols.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Boolean
-   * @return property wrapper around a Boolean function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Boolean>> iconAllowOverlap(CameraFunction<Z, Boolean> function) {
-    return new LayoutPropertyValue<>("icon-allow-overlap", function);
-  }
-
   /**
    * If true, other symbols can be visible even if they collide with the icon.
    *
@@ -2762,18 +1755,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("icon-ignore-placement", value);
   }
 
-
-  /**
-   * If true, other symbols can be visible even if they collide with the icon.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Boolean
-   * @return property wrapper around a Boolean function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Boolean>> iconIgnorePlacement(CameraFunction<Z, Boolean> function) {
-    return new LayoutPropertyValue<>("icon-ignore-placement", function);
-  }
-
   /**
    * If true, text will display without their corresponding icons when the icon collides with other symbols and the text does not.
    *
@@ -2794,18 +1775,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("icon-optional", value);
   }
 
-
-  /**
-   * If true, text will display without their corresponding icons when the icon collides with other symbols and the text does not.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Boolean
-   * @return property wrapper around a Boolean function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Boolean>> iconOptional(CameraFunction<Z, Boolean> function) {
-    return new LayoutPropertyValue<>("icon-optional", function);
-  }
-
   /**
    * In combination with {@link Property.SYMBOL_PLACEMENT}, determines the rotation behavior of icons.
    *
@@ -2826,18 +1795,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("icon-rotation-alignment", value);
   }
 
-
-  /**
-   * In combination with {@link Property.SYMBOL_PLACEMENT}, determines the rotation behavior of icons.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> iconRotationAlignment(CameraFunction<Z, String> function) {
-    return new LayoutPropertyValue<>("icon-rotation-alignment", function);
-  }
-
   /**
    * Scales the original size of the icon by the provided factor. The new pixel size of the image will be the original pixel size multiplied by {@link PropertyFactory#iconSize}. 1 is the original size; 3 triples the size of the image.
    *
@@ -2858,18 +1815,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("icon-size", value);
   }
 
-
-  /**
-   * Scales the original size of the icon by the provided factor. The new pixel size of the image will be the original pixel size multiplied by {@link PropertyFactory#iconSize}. 1 is the original size; 3 triples the size of the image.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  public static <T> PropertyValue<Function<T, Float>> iconSize(Function<T, Float> function) {
-    return new LayoutPropertyValue<>("icon-size", function);
-  }
-
   /**
    * Scales the icon to fit around the associated text.
    *
@@ -2890,18 +1835,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("icon-text-fit", value);
   }
 
-
-  /**
-   * Scales the icon to fit around the associated text.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> iconTextFit(CameraFunction<Z, String> function) {
-    return new LayoutPropertyValue<>("icon-text-fit", function);
-  }
-
   /**
    * Size of the additional area added to dimensions determined by {@link Property.ICON_TEXT_FIT}, in clockwise order: top, right, bottom, left.
    *
@@ -2922,18 +1855,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("icon-text-fit-padding", value);
   }
 
-
-  /**
-   * Size of the additional area added to dimensions determined by {@link Property.ICON_TEXT_FIT}, in clockwise order: top, right, bottom, left.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float[]
-   * @return property wrapper around a Float[] function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float[]>> iconTextFitPadding(CameraFunction<Z, Float[]> function) {
-    return new LayoutPropertyValue<>("icon-text-fit-padding", function);
-  }
-
   /**
    * Name of image in sprite to use for drawing an image background. Within literal values and zoom functions, property names enclosed in curly brackets (e.g. `{token}`) are replaced with the value of the named property. Expressions and property functions do not support this syntax; for equivalent functionality in expressions, use the [`concat`](#expressions-concat) and [`get`](#expressions-get) operators.
    *
@@ -2954,18 +1875,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("icon-image", value);
   }
 
-
-  /**
-   * Name of image in sprite to use for drawing an image background. Within literal values and zoom functions, property names enclosed in curly brackets (e.g. `{token}`) are replaced with the value of the named property. Expressions and property functions do not support this syntax; for equivalent functionality in expressions, use the [`concat`](#expressions-concat) and [`get`](#expressions-get) operators.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  public static <T> PropertyValue<Function<T, String>> iconImage(Function<T, String> function) {
-    return new LayoutPropertyValue<>("icon-image", function);
-  }
-
   /**
    * Rotates the icon clockwise.
    *
@@ -2986,18 +1895,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("icon-rotate", value);
   }
 
-
-  /**
-   * Rotates the icon clockwise.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  public static <T> PropertyValue<Function<T, Float>> iconRotate(Function<T, Float> function) {
-    return new LayoutPropertyValue<>("icon-rotate", function);
-  }
-
   /**
    * Size of the additional area around the icon bounding box used for detecting symbol collisions.
    *
@@ -3018,18 +1915,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("icon-padding", value);
   }
 
-
-  /**
-   * Size of the additional area around the icon bounding box used for detecting symbol collisions.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> iconPadding(CameraFunction<Z, Float> function) {
-    return new LayoutPropertyValue<>("icon-padding", function);
-  }
-
   /**
    * If true, the icon may be flipped to prevent it from being rendered upside-down.
    *
@@ -3050,18 +1935,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("icon-keep-upright", value);
   }
 
-
-  /**
-   * If true, the icon may be flipped to prevent it from being rendered upside-down.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Boolean
-   * @return property wrapper around a Boolean function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Boolean>> iconKeepUpright(CameraFunction<Z, Boolean> function) {
-    return new LayoutPropertyValue<>("icon-keep-upright", function);
-  }
-
   /**
    * Offset distance of icon from its anchor. Positive values indicate right and down, while negative values indicate left and up. Each component is multiplied by the value of {@link PropertyFactory#iconSize} to obtain the final offset in density-independent pixels. When combined with {@link PropertyFactory#iconRotate} the offset will be as if the rotated direction was up.
    *
@@ -3082,18 +1955,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("icon-offset", value);
   }
 
-
-  /**
-   * Offset distance of icon from its anchor. Positive values indicate right and down, while negative values indicate left and up. Each component is multiplied by the value of {@link PropertyFactory#iconSize} to obtain the final offset in density-independent pixels. When combined with {@link PropertyFactory#iconRotate} the offset will be as if the rotated direction was up.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float[]
-   * @return property wrapper around a Float[] function
-   */
-  public static <T> PropertyValue<Function<T, Float[]>> iconOffset(Function<T, Float[]> function) {
-    return new LayoutPropertyValue<>("icon-offset", function);
-  }
-
   /**
    * Part of the icon placed closest to the anchor.
    *
@@ -3114,18 +1975,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("icon-anchor", value);
   }
 
-
-  /**
-   * Part of the icon placed closest to the anchor.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  public static <T> PropertyValue<Function<T, String>> iconAnchor(Function<T, String> function) {
-    return new LayoutPropertyValue<>("icon-anchor", function);
-  }
-
   /**
    * Orientation of icon when map is pitched.
    *
@@ -3146,18 +1995,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("icon-pitch-alignment", value);
   }
 
-
-  /**
-   * Orientation of icon when map is pitched.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> iconPitchAlignment(CameraFunction<Z, String> function) {
-    return new LayoutPropertyValue<>("icon-pitch-alignment", function);
-  }
-
   /**
    * Orientation of text when map is pitched.
    *
@@ -3178,18 +2015,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-pitch-alignment", value);
   }
 
-
-  /**
-   * Orientation of text when map is pitched.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> textPitchAlignment(CameraFunction<Z, String> function) {
-    return new LayoutPropertyValue<>("text-pitch-alignment", function);
-  }
-
   /**
    * In combination with {@link Property.SYMBOL_PLACEMENT}, determines the rotation behavior of the individual glyphs forming the text.
    *
@@ -3210,18 +2035,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-rotation-alignment", value);
   }
 
-
-  /**
-   * In combination with {@link Property.SYMBOL_PLACEMENT}, determines the rotation behavior of the individual glyphs forming the text.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for String
-   * @return property wrapper around a String function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, String>> textRotationAlignment(CameraFunction<Z, String> function) {
-    return new LayoutPropertyValue<>("text-rotation-alignment", function);
-  }
-
   /**
    * Value to use for a text label. Within literal values and zoom functions, property names enclosed in curly brackets (e.g. `{token}`) are replaced with the value of the named property. Expressions and property functions do not support this syntax; for equivalent functionality in expressions, use the [`concat`](#expressions-concat) and [`get`](#expressions-get) operators.
    *
@@ -3242,18 +2055,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-field", value);
   }
 
-
-  /**
-   * Value to use for a text label. Within literal values and zoom functions, property names enclosed in curly brackets (e.g. `{token}`) are replaced with the value of the named property. Expressions and property functions do not support this syntax; for equivalent functionality in expressions, use the [`concat`](#expressions-concat) and [`get`](#expressions-get) operators.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  public static <T> PropertyValue<Function<T, String>> textField(Function<T, String> function) {
-    return new LayoutPropertyValue<>("text-field", function);
-  }
-
   /**
    * Font stack to use for displaying text.
    *
@@ -3274,18 +2075,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-font", value);
   }
 
-
-  /**
-   * Font stack to use for displaying text.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String[]
-   * @return property wrapper around a String[] function
-   */
-  public static <T> PropertyValue<Function<T, String[]>> textFont(Function<T, String[]> function) {
-    return new LayoutPropertyValue<>("text-font", function);
-  }
-
   /**
    * Font size.
    *
@@ -3306,18 +2095,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-size", value);
   }
 
-
-  /**
-   * Font size.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  public static <T> PropertyValue<Function<T, Float>> textSize(Function<T, Float> function) {
-    return new LayoutPropertyValue<>("text-size", function);
-  }
-
   /**
    * The maximum line width for text wrapping.
    *
@@ -3338,18 +2115,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-max-width", value);
   }
 
-
-  /**
-   * The maximum line width for text wrapping.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  public static <T> PropertyValue<Function<T, Float>> textMaxWidth(Function<T, Float> function) {
-    return new LayoutPropertyValue<>("text-max-width", function);
-  }
-
   /**
    * Text leading value for multi-line text.
    *
@@ -3370,18 +2135,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-line-height", value);
   }
 
-
-  /**
-   * Text leading value for multi-line text.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> textLineHeight(CameraFunction<Z, Float> function) {
-    return new LayoutPropertyValue<>("text-line-height", function);
-  }
-
   /**
    * Text tracking amount.
    *
@@ -3402,18 +2155,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-letter-spacing", value);
   }
 
-
-  /**
-   * Text tracking amount.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  public static <T> PropertyValue<Function<T, Float>> textLetterSpacing(Function<T, Float> function) {
-    return new LayoutPropertyValue<>("text-letter-spacing", function);
-  }
-
   /**
    * Text justification options.
    *
@@ -3434,18 +2175,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-justify", value);
   }
 
-
-  /**
-   * Text justification options.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  public static <T> PropertyValue<Function<T, String>> textJustify(Function<T, String> function) {
-    return new LayoutPropertyValue<>("text-justify", function);
-  }
-
   /**
    * Part of the text placed closest to the anchor.
    *
@@ -3466,18 +2195,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-anchor", value);
   }
 
-
-  /**
-   * Part of the text placed closest to the anchor.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  public static <T> PropertyValue<Function<T, String>> textAnchor(Function<T, String> function) {
-    return new LayoutPropertyValue<>("text-anchor", function);
-  }
-
   /**
    * Maximum angle change between adjacent characters.
    *
@@ -3498,18 +2215,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-max-angle", value);
   }
 
-
-  /**
-   * Maximum angle change between adjacent characters.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> textMaxAngle(CameraFunction<Z, Float> function) {
-    return new LayoutPropertyValue<>("text-max-angle", function);
-  }
-
   /**
    * Rotates the text clockwise.
    *
@@ -3530,18 +2235,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-rotate", value);
   }
 
-
-  /**
-   * Rotates the text clockwise.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float
-   * @return property wrapper around a Float function
-   */
-  public static <T> PropertyValue<Function<T, Float>> textRotate(Function<T, Float> function) {
-    return new LayoutPropertyValue<>("text-rotate", function);
-  }
-
   /**
    * Size of the additional area around the text bounding box used for detecting symbol collisions.
    *
@@ -3562,18 +2255,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-padding", value);
   }
 
-
-  /**
-   * Size of the additional area around the text bounding box used for detecting symbol collisions.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Float
-   * @return property wrapper around a Float function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Float>> textPadding(CameraFunction<Z, Float> function) {
-    return new LayoutPropertyValue<>("text-padding", function);
-  }
-
   /**
    * If true, the text may be flipped vertically to prevent it from being rendered upside-down.
    *
@@ -3594,18 +2275,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-keep-upright", value);
   }
 
-
-  /**
-   * If true, the text may be flipped vertically to prevent it from being rendered upside-down.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Boolean
-   * @return property wrapper around a Boolean function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Boolean>> textKeepUpright(CameraFunction<Z, Boolean> function) {
-    return new LayoutPropertyValue<>("text-keep-upright", function);
-  }
-
   /**
    * Specifies how to capitalize text, similar to the CSS {@link PropertyFactory#textTransform} property.
    *
@@ -3626,18 +2295,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-transform", value);
   }
 
-
-  /**
-   * Specifies how to capitalize text, similar to the CSS {@link PropertyFactory#textTransform} property.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for String
-   * @return property wrapper around a String function
-   */
-  public static <T> PropertyValue<Function<T, String>> textTransform(Function<T, String> function) {
-    return new LayoutPropertyValue<>("text-transform", function);
-  }
-
   /**
    * Offset distance of text from its anchor. Positive values indicate right and down, while negative values indicate left and up.
    *
@@ -3658,18 +2315,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-offset", value);
   }
 
-
-  /**
-   * Offset distance of text from its anchor. Positive values indicate right and down, while negative values indicate left and up.
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for Float[]
-   * @return property wrapper around a Float[] function
-   */
-  public static <T> PropertyValue<Function<T, Float[]>> textOffset(Function<T, Float[]> function) {
-    return new LayoutPropertyValue<>("text-offset", function);
-  }
-
   /**
    * If true, the text will be visible even if it collides with other previously drawn symbols.
    *
@@ -3690,18 +2335,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-allow-overlap", value);
   }
 
-
-  /**
-   * If true, the text will be visible even if it collides with other previously drawn symbols.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Boolean
-   * @return property wrapper around a Boolean function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Boolean>> textAllowOverlap(CameraFunction<Z, Boolean> function) {
-    return new LayoutPropertyValue<>("text-allow-overlap", function);
-  }
-
   /**
    * If true, other symbols can be visible even if they collide with the text.
    *
@@ -3722,18 +2355,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-ignore-placement", value);
   }
 
-
-  /**
-   * If true, other symbols can be visible even if they collide with the text.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Boolean
-   * @return property wrapper around a Boolean function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Boolean>> textIgnorePlacement(CameraFunction<Z, Boolean> function) {
-    return new LayoutPropertyValue<>("text-ignore-placement", function);
-  }
-
   /**
    * If true, icons will display without their corresponding text when the text collides with other symbols and the icon does not.
    *
@@ -3754,18 +2375,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("text-optional", value);
   }
 
-
-  /**
-   * If true, icons will display without their corresponding text when the text collides with other symbols and the icon does not.
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for Boolean
-   * @return property wrapper around a Boolean function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, Boolean>> textOptional(CameraFunction<Z, Boolean> function) {
-    return new LayoutPropertyValue<>("text-optional", function);
-  }
-
   public static String colorToRgbaString(@ColorInt int value) {
     return String.format(Locale.US,"rgba(%d, %d, %d, %d)",
       (value >> 16) & 0xFF, (value >> 8) & 0xFF, value & 0xFF, (value >> 24) & 0xFF);
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/PropertyValue.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/PropertyValue.java
index a57c440df4..fa1779a6c7 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/PropertyValue.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/PropertyValue.java
@@ -4,8 +4,9 @@ import android.support.annotation.ColorInt;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 
+import com.google.gson.JsonArray;
 import com.mapbox.mapboxsdk.exceptions.ConversionException;
-import com.mapbox.mapboxsdk.style.functions.Function;
+import com.mapbox.mapboxsdk.style.expressions.Expression;
 import com.mapbox.mapboxsdk.utils.ColorUtils;
 
 import timber.log.Timber;
@@ -40,35 +41,39 @@ public class PropertyValue<T> {
   }
 
   /**
-   * Returns if this is a function.
+   * Returns if this is a expression.
    *
-   * @return true if is a function, false if not
+   * @return true if this is a expression, false if not
    */
-  public boolean isFunction() {
-    return !isNull() && value instanceof Function;
+  public boolean isExpression() {
+    return !isNull() && value instanceof JsonArray;
   }
 
   /**
-   * Returns if this is a value.
+   * Get the expression of the property.
    *
-   * @return true if is a value, false if not
+   * @return the property expression
    */
-  public boolean isValue() {
-    return !isNull() && !isFunction();
-  }
-
   @Nullable
-  public Function<?, T> getFunction() {
-    if (isFunction()) {
-      // noinspection unchecked
-      return (Function<?, T>) value;
+  public Expression getExpression() {
+    if (isExpression()) {
+      return Expression.Converter.convert((JsonArray) value);
     } else {
-      Timber.w("not a function, try value");
+      Timber.w("not a expression, try value");
       return null;
     }
   }
 
   /**
+   * Returns if this is a value.
+   *
+   * @return true if is a value, false if not
+   */
+  public boolean isValue() {
+    return !isNull() && !isExpression();
+  }
+
+  /**
    * Get the value of the property.
    *
    * @return the property value
@@ -77,7 +82,7 @@ public class PropertyValue<T> {
   public T getValue() {
     if (isValue()) {
       // noinspection unchecked
-      return (T) value;
+      return value;
     } else {
       Timber.w("not a value, try function");
       return null;
@@ -114,4 +119,4 @@ public class PropertyValue<T> {
   public String toString() {
     return String.format("%s: %s", name, value);
   }
-}
+}
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/property_factory.java.ejs b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/property_factory.java.ejs
index 283d4e4189..6480dde3c8 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/property_factory.java.ejs
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/property_factory.java.ejs
@@ -8,9 +8,7 @@ package com.mapbox.mapboxsdk.style.layers;
 
 import android.support.annotation.ColorInt;
 
-import com.mapbox.mapboxsdk.style.functions.CameraFunction;
 import com.mapbox.mapboxsdk.style.expressions.Expression;
-import com.mapbox.mapboxsdk.style.functions.Function;
 
 import java.util.Locale;
 
@@ -31,18 +29,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("visibility", value);
   }
 
-  /**
-   * Set the property visibility.
-   *
-   * @param <T> the function input type
-   * @param function the visibility function
-   * @return property wrapper around a String function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, String>> visibility(Function<T, String> function) {
-    return new LayoutPropertyValue<>("visibility", function);
-  }
-
 <% for (const property of paintProperties) { -%>
 <% if (property.type == 'color') { -%>
   /**
@@ -76,35 +62,6 @@ public class PropertyFactory {
     return new PaintPropertyValue<>("<%-  property.name %>", expression);
   }
 
-<% if (supportsPropertyFunction(property)) { -%>
-
-  /**
-   * <%- propertyFactoryMethodDoc(property) %>
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for <%- propertyType(property) %>
-   * @return property wrapper around a <%- propertyType(property) %> function
-   */
-  @Deprecated
-  public static <T> PropertyValue<Function<T, <%- propertyType(property) %>>> <%- camelizeWithLeadingLowercase(property.name) %>(Function<T, <%- propertyType(property) %>> function) {
-    return new PaintPropertyValue<>("<%-  property.name %>", function);
-  }
-
-<% } else if (supportsZoomFunction(property)) { -%>
-
-  /**
-   * <%- propertyFactoryMethodDoc(property) %>
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for <%- propertyType(property) %>
-   * @return property wrapper around a <%- propertyType(property) %> function
-   */
-  @Deprecated
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, <%- propertyType(property) %>>> <%- camelizeWithLeadingLowercase(property.name) %>(CameraFunction<Z, <%- propertyType(property) %>> function) {
-    return new PaintPropertyValue<>("<%-  property.name %>", function);
-  }
-
-<% } -%>
 <% } -%>
 <% for (const property of layoutProperties) { -%>
   /**
@@ -127,33 +84,6 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("<%-  property.name %>", value);
   }
 
-<% if (supportsPropertyFunction(property)) { -%>
-
-  /**
-   * <%- propertyFactoryMethodDoc(property) %>
-   *
-   * @param <T> the function input type
-   * @param function a wrapper function for <%- propertyType(property) %>
-   * @return property wrapper around a <%- propertyType(property) %> function
-   */
-  public static <T> PropertyValue<Function<T, <%- propertyType(property) %>>> <%- camelizeWithLeadingLowercase(property.name) %>(Function<T, <%- propertyType(property) %>> function) {
-    return new LayoutPropertyValue<>("<%-  property.name %>", function);
-  }
-
-<% } else if (supportsZoomFunction(property)) { -%>
-
-  /**
-   * <%- propertyFactoryMethodDoc(property) %>
-   *
-   * @param <Z> the zoom parameter type
-   * @param function a wrapper {@link CameraFunction} for <%- propertyType(property) %>
-   * @return property wrapper around a <%- propertyType(property) %> function
-   */
-  public static <Z extends Number> PropertyValue<CameraFunction<Z, <%- propertyType(property) %>>> <%- camelizeWithLeadingLowercase(property.name) %>(CameraFunction<Z, <%- propertyType(property) %>> function) {
-    return new LayoutPropertyValue<>("<%-  property.name %>", function);
-  }
-
-<% } -%>
 <% } -%>
   public static String colorToRgbaString(@ColorInt int value) {
     return String.format(Locale.US,"rgba(%d, %d, %d, %d)",
diff --git a/platform/android/MapboxGLAndroidSDK/src/test/java/com/mapbox/mapboxsdk/style/layers/FunctionTest.java b/platform/android/MapboxGLAndroidSDK/src/test/java/com/mapbox/mapboxsdk/style/layers/FunctionTest.java
deleted file mode 100644
index bac1154d62..0000000000
--- a/platform/android/MapboxGLAndroidSDK/src/test/java/com/mapbox/mapboxsdk/style/layers/FunctionTest.java
+++ /dev/null
@@ -1,34 +0,0 @@
-package com.mapbox.mapboxsdk.style.layers;
-
-import com.mapbox.mapboxsdk.style.functions.Function;
-
-import org.junit.Test;
-
-import static com.mapbox.mapboxsdk.style.functions.Function.zoom;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stop.stop;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stops.interval;
-import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.lineBlur;
-import static org.junit.Assert.assertArrayEquals;
-import static org.junit.Assert.assertNotNull;
-
-/**
- * Tests Function
- */
-public class FunctionTest {
-
-  @Test
-  public void testZoomFunction() {
-    Function<Float, Float> zoomF = zoom(interval(
-      stop(1f, lineBlur(1f)),
-      stop(10f, lineBlur(20f))
-      )
-    );
-
-    assertNotNull(zoomF.toValueObject());
-    assertArrayEquals(
-      new Object[] {new Object[] {1f, 1f}, new Object[] {10f, 20f}},
-      (Object[]) zoomF.toValueObject().get("stops")
-    );
-  }
-
-}
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/BackgroundLayerTest.java b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/BackgroundLayerTest.java
index 0e4cf6a8ca..2d16291832 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/BackgroundLayerTest.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/BackgroundLayerTest.java
@@ -3,31 +3,18 @@
 package com.mapbox.mapboxsdk.testapp.style;
 
 import android.graphics.Color;
-import android.support.test.espresso.UiController;
 import android.support.test.runner.AndroidJUnit4;
 
 import timber.log.Timber;
 
-import com.mapbox.mapboxsdk.maps.MapboxMap;
-import com.mapbox.mapboxsdk.style.functions.CompositeFunction;
-import com.mapbox.mapboxsdk.style.functions.CameraFunction;
-import com.mapbox.mapboxsdk.style.functions.SourceFunction;
-import com.mapbox.mapboxsdk.style.functions.stops.CategoricalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.ExponentialStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IdentityStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IntervalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.Stop;
-import com.mapbox.mapboxsdk.style.functions.stops.Stops;
+import com.mapbox.mapboxsdk.style.expressions.Expression;
 import com.mapbox.mapboxsdk.style.layers.BackgroundLayer;
-import com.mapbox.mapboxsdk.testapp.action.MapboxMapAction;
 import com.mapbox.mapboxsdk.testapp.activity.BaseActivityTest;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import static com.mapbox.mapboxsdk.style.functions.Function.*;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stop.stop;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stops.*;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.*;
 import static com.mapbox.mapboxsdk.testapp.action.MapboxMapAction.invoke;
 import static org.junit.Assert.*;
 import static com.mapbox.mapboxsdk.style.layers.Property.*;
@@ -51,11 +38,8 @@ public class BackgroundLayerTest extends BaseActivityTest {
 
   private void setupLayer() {
     Timber.i("Retrieving layer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        layer = mapboxMap.getLayerAs("background");
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      layer = mapboxMap.getLayerAs("background");
     });
   }
 
@@ -64,18 +48,15 @@ public class BackgroundLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("Visibility");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Get initial
-        assertEquals(layer.getVisibility().getValue(), VISIBLE);
+      // Get initial
+      assertEquals(layer.getVisibility().getValue(), VISIBLE);
 
-        // Set
-        layer.setProperties(visibility(NONE));
-        assertEquals(layer.getVisibility().getValue(), NONE);
-      }
+      // Set
+      layer.setProperties(visibility(NONE));
+      assertEquals(layer.getVisibility().getValue(), NONE);
     });
   }
 
@@ -84,16 +65,13 @@ public class BackgroundLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("background-colorTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setBackgroundColorTransition(options);
-        assertEquals(layer.getBackgroundColorTransition(), options);
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setBackgroundColorTransition(options);
+      assertEquals(layer.getBackgroundColorTransition(), options);
     });
   }
 
@@ -102,47 +80,12 @@ public class BackgroundLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("background-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Set and Get
-        layer.setProperties(backgroundColor("rgba(0, 0, 0, 1)"));
-        assertEquals((String) layer.getBackgroundColor().getValue(), (String) "rgba(0, 0, 0, 1)");
-      }
-    });
-  }
-
-  @Test
-  public void testBackgroundColorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("background-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          backgroundColor(
-            zoom(
-              exponential(
-                stop(2, backgroundColor("rgba(0, 0, 0, 1)"))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getBackgroundColor());
-        assertNotNull(layer.getBackgroundColor().getFunction());
-        assertEquals(CameraFunction.class, layer.getBackgroundColor().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getBackgroundColor().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getBackgroundColor().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getBackgroundColor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(backgroundColor("rgba(0, 0, 0, 1)"));
+      assertEquals((String) layer.getBackgroundColor().getValue(), (String) "rgba(0, 0, 0, 1)");
     });
   }
 
@@ -151,15 +94,12 @@ public class BackgroundLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("background-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Set and Get
-        layer.setProperties(backgroundColor(Color.RED));
-        assertEquals(layer.getBackgroundColorAsInt(), Color.RED);
-      }
+      // Set and Get
+      layer.setProperties(backgroundColor(Color.RED));
+      assertEquals(layer.getBackgroundColorAsInt(), Color.RED);
     });
   }
 
@@ -168,16 +108,13 @@ public class BackgroundLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("background-patternTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setBackgroundPatternTransition(options);
-        assertEquals(layer.getBackgroundPatternTransition(), options);
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setBackgroundPatternTransition(options);
+      assertEquals(layer.getBackgroundPatternTransition(), options);
     });
   }
 
@@ -186,46 +123,12 @@ public class BackgroundLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("background-pattern");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(backgroundPattern("pedestrian-polygon"));
-        assertEquals((String) layer.getBackgroundPattern().getValue(), (String) "pedestrian-polygon");
-      }
-    });
-  }
-
-  @Test
-  public void testBackgroundPatternAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("background-pattern");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          backgroundPattern(
-            zoom(
-              interval(
-                stop(2, backgroundPattern("pedestrian-polygon"))
-              )
-            )
-          )
-        );
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Verify
-        assertNotNull(layer.getBackgroundPattern());
-        assertNotNull(layer.getBackgroundPattern().getFunction());
-        assertEquals(CameraFunction.class, layer.getBackgroundPattern().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getBackgroundPattern().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getBackgroundPattern().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(backgroundPattern("pedestrian-polygon"));
+      assertEquals((String) layer.getBackgroundPattern().getValue(), (String) "pedestrian-polygon");
     });
   }
 
@@ -234,16 +137,13 @@ public class BackgroundLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("background-opacityTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setBackgroundOpacityTransition(options);
-        assertEquals(layer.getBackgroundOpacityTransition(), options);
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setBackgroundOpacityTransition(options);
+      assertEquals(layer.getBackgroundOpacityTransition(), options);
     });
   }
 
@@ -252,48 +152,12 @@ public class BackgroundLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("background-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(backgroundOpacity(0.3f));
-        assertEquals((Float) layer.getBackgroundOpacity().getValue(), (Float) 0.3f);
-      }
-    });
-  }
-
-  @Test
-  public void testBackgroundOpacityAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("background-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          backgroundOpacity(
-            zoom(
-              exponential(
-                stop(2, backgroundOpacity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Verify
-        assertNotNull(layer.getBackgroundOpacity());
-        assertNotNull(layer.getBackgroundOpacity().getFunction());
-        assertEquals(CameraFunction.class, layer.getBackgroundOpacity().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getBackgroundOpacity().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getBackgroundOpacity().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getBackgroundOpacity().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(backgroundOpacity(0.3f));
+      assertEquals((Float) layer.getBackgroundOpacity().getValue(), (Float) 0.3f);
     });
   }
-
-}
+}
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/CircleLayerTest.java b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/CircleLayerTest.java
index 559e446307..0460a59534 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/CircleLayerTest.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/CircleLayerTest.java
@@ -3,31 +3,18 @@
 package com.mapbox.mapboxsdk.testapp.style;
 
 import android.graphics.Color;
-import android.support.test.espresso.UiController;
 import android.support.test.runner.AndroidJUnit4;
 
 import timber.log.Timber;
 
-import com.mapbox.mapboxsdk.maps.MapboxMap;
-import com.mapbox.mapboxsdk.style.functions.CompositeFunction;
-import com.mapbox.mapboxsdk.style.functions.CameraFunction;
-import com.mapbox.mapboxsdk.style.functions.SourceFunction;
-import com.mapbox.mapboxsdk.style.functions.stops.CategoricalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.ExponentialStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IdentityStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IntervalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.Stop;
-import com.mapbox.mapboxsdk.style.functions.stops.Stops;
+import com.mapbox.mapboxsdk.style.expressions.Expression;
 import com.mapbox.mapboxsdk.style.layers.CircleLayer;
-import com.mapbox.mapboxsdk.testapp.action.MapboxMapAction;
 import com.mapbox.mapboxsdk.testapp.activity.BaseActivityTest;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import static com.mapbox.mapboxsdk.style.functions.Function.*;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stop.stop;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stops.*;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.*;
 import static com.mapbox.mapboxsdk.testapp.action.MapboxMapAction.invoke;
 import static org.junit.Assert.*;
 import static com.mapbox.mapboxsdk.style.layers.Property.*;
@@ -51,17 +38,14 @@ public class CircleLayerTest extends BaseActivityTest {
 
   private void setupLayer() {
     Timber.i("Retrieving layer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
-          Timber.i("Adding layer");
-          layer = new CircleLayer("my-layer", "composite");
-          layer.setSourceLayer("composite");
-          mapboxMap.addLayer(layer);
-          // Layer reference is now stale, get new reference
-          layer = mapboxMap.getLayerAs("my-layer");
-        }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
+        Timber.i("Adding layer");
+        layer = new CircleLayer("my-layer", "composite");
+        layer.setSourceLayer("composite");
+        mapboxMap.addLayer(layer);
+        // Layer reference is now stale, get new reference
+        layer = mapboxMap.getLayerAs("my-layer");
       }
     });
   }
@@ -71,18 +55,15 @@ public class CircleLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("Visibility");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Get initial
-        assertEquals(layer.getVisibility().getValue(), VISIBLE);
+      // Get initial
+      assertEquals(layer.getVisibility().getValue(), VISIBLE);
 
-        // Set
-        layer.setProperties(visibility(NONE));
-        assertEquals(layer.getVisibility().getValue(), NONE);
-      }
+      // Set
+      layer.setProperties(visibility(NONE));
+      assertEquals(layer.getVisibility().getValue(), NONE);
     });
   }
 
@@ -91,19 +72,16 @@ public class CircleLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("SourceLayer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Get initial
-        assertEquals(layer.getSourceLayer(), "composite");
-
-        // Set
-        final String sourceLayer = "test";
-        layer.setSourceLayer(sourceLayer);
-        assertEquals(layer.getSourceLayer(), sourceLayer);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Get initial
+      assertEquals(layer.getSourceLayer(), "composite");
+
+      // Set
+      final String sourceLayer = "test";
+      layer.setSourceLayer(sourceLayer);
+      assertEquals(layer.getSourceLayer(), sourceLayer);
     });
   }
 
@@ -112,216 +90,58 @@ public class CircleLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-radiusTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setCircleRadiusTransition(options);
-        assertEquals(layer.getCircleRadiusTransition(), options);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleRadiusAsConstant() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-radius");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(circleRadius(0.3f));
-        assertEquals((Float) layer.getCircleRadius().getValue(), (Float) 0.3f);
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setCircleRadiusTransition(options);
+      assertEquals(layer.getCircleRadiusTransition(), options);
     });
   }
 
   @Test
-  public void testCircleRadiusAsCameraFunction() {
+  public void testCircleRadiusAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-radius");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleRadius(
-            zoom(
-              exponential(
-                stop(2, circleRadius(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleRadius());
-        assertNotNull(layer.getCircleRadius().getFunction());
-        assertEquals(CameraFunction.class, layer.getCircleRadius().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getCircleRadius().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getCircleRadius().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getCircleRadius().getFunction().getStops()).size());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleRadiusAsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-radius");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleRadius(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleRadius());
-        assertNotNull(layer.getCircleRadius().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleRadius().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleRadius().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getCircleRadius().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(circleRadius(0.3f));
+      assertEquals((Float) layer.getCircleRadius().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testCircleRadiusAsExponentialSourceFunction() {
+  public void testCircleRadiusAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("circle-radius");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleRadius(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, circleRadius(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleRadius());
-        assertNotNull(layer.getCircleRadius().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleRadius().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleRadius().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getCircleRadius().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("circle-radius-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleRadiusAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-radius");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleRadius(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, circleRadius(0.3f))
-              )
-            ).withDefaultValue(circleRadius(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleRadius());
-        assertNotNull(layer.getCircleRadius().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleRadius().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleRadius().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getCircleRadius().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getCircleRadius().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getCircleRadius().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getCircleRadius().getFunction()).getDefaultValue().getValue());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(circleRadius(expression));
+      assertEquals(layer.getCircleRadius().getExpression(), expression);
     });
-
   }
 
-  @Test
-  public void testCircleRadiusAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-radius");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleRadius(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, circleRadius(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(circleRadius(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleRadius());
-        assertNotNull(layer.getCircleRadius().getFunction());
-        assertEquals(CompositeFunction.class, layer.getCircleRadius().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getCircleRadius().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getCircleRadius().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getCircleRadius().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getCircleRadius().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testCircleColorTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-colorTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setCircleColorTransition(options);
-        assertEquals(layer.getCircleColorTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setCircleColorTransition(options);
+      assertEquals(layer.getCircleColorTransition(), options);
     });
   }
 
@@ -330,157 +150,42 @@ public class CircleLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(circleColor("rgba(0, 0, 0, 1)"));
-        assertEquals((String) layer.getCircleColor().getValue(), (String) "rgba(0, 0, 0, 1)");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleColorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleColor(
-            zoom(
-              exponential(
-                stop(2, circleColor("rgba(0, 0, 0, 1)"))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleColor());
-        assertNotNull(layer.getCircleColor().getFunction());
-        assertEquals(CameraFunction.class, layer.getCircleColor().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getCircleColor().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getCircleColor().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getCircleColor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(circleColor("rgba(0, 0, 0, 1)"));
+      assertEquals((String) layer.getCircleColor().getValue(), (String) "rgba(0, 0, 0, 1)");
     });
   }
 
   @Test
-  public void testCircleColorAsIdentitySourceFunction() {
+  public void testCircleColorAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("circle-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleColor(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleColor());
-        assertNotNull(layer.getCircleColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleColor().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getCircleColor().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("circle-color-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleColorAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleColor(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(Color.RED, circleColor(Color.RED))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleColor());
-        assertNotNull(layer.getCircleColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleColor().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getCircleColor().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = toColor(Expression.get("undefined"));
+      layer.setProperties(circleColor(expression));
+      assertEquals(layer.getCircleColor().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testCircleColorAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleColor(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop("valueA", circleColor(Color.RED))
-              )
-            ).withDefaultValue(circleColor(Color.GREEN))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleColor());
-        assertNotNull(layer.getCircleColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleColor().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getCircleColor().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getCircleColor().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getCircleColor().getFunction()).getDefaultValue().getValue());
-        assertEquals(Color.GREEN, (int) ((SourceFunction) layer.getCircleColor().getFunction()).getDefaultValue().getColorInt());
-      }
-    });
-
-  }
 
   @Test
   public void testCircleColorAsIntConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(circleColor(Color.RED));
-        assertEquals(layer.getCircleColorAsInt(), Color.RED);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      layer.setProperties(circleColor(Color.RED));
+      assertEquals(layer.getCircleColorAsInt(), Color.RED);
     });
   }
 
@@ -489,416 +194,103 @@ public class CircleLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-blurTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setCircleBlurTransition(options);
-        assertEquals(layer.getCircleBlurTransition(), options);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleBlurAsConstant() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(circleBlur(0.3f));
-        assertEquals((Float) layer.getCircleBlur().getValue(), (Float) 0.3f);
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setCircleBlurTransition(options);
+      assertEquals(layer.getCircleBlurTransition(), options);
     });
   }
 
   @Test
-  public void testCircleBlurAsCameraFunction() {
+  public void testCircleBlurAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleBlur(
-            zoom(
-              exponential(
-                stop(2, circleBlur(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleBlur());
-        assertNotNull(layer.getCircleBlur().getFunction());
-        assertEquals(CameraFunction.class, layer.getCircleBlur().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getCircleBlur().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getCircleBlur().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getCircleBlur().getFunction().getStops()).size());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleBlurAsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleBlur(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleBlur());
-        assertNotNull(layer.getCircleBlur().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleBlur().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleBlur().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getCircleBlur().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(circleBlur(0.3f));
+      assertEquals((Float) layer.getCircleBlur().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testCircleBlurAsExponentialSourceFunction() {
+  public void testCircleBlurAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("circle-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleBlur(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, circleBlur(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleBlur());
-        assertNotNull(layer.getCircleBlur().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleBlur().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleBlur().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getCircleBlur().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("circle-blur-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleBlurAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleBlur(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, circleBlur(0.3f))
-              )
-            ).withDefaultValue(circleBlur(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleBlur());
-        assertNotNull(layer.getCircleBlur().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleBlur().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleBlur().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getCircleBlur().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getCircleBlur().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getCircleBlur().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getCircleBlur().getFunction()).getDefaultValue().getValue());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(circleBlur(expression));
+      assertEquals(layer.getCircleBlur().getExpression(), expression);
     });
-
   }
 
-  @Test
-  public void testCircleBlurAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleBlur(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, circleBlur(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(circleBlur(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleBlur());
-        assertNotNull(layer.getCircleBlur().getFunction());
-        assertEquals(CompositeFunction.class, layer.getCircleBlur().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getCircleBlur().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getCircleBlur().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getCircleBlur().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getCircleBlur().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testCircleOpacityTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-opacityTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setCircleOpacityTransition(options);
-        assertEquals(layer.getCircleOpacityTransition(), options);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleOpacityAsConstant() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(circleOpacity(0.3f));
-        assertEquals((Float) layer.getCircleOpacity().getValue(), (Float) 0.3f);
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setCircleOpacityTransition(options);
+      assertEquals(layer.getCircleOpacityTransition(), options);
     });
   }
 
   @Test
-  public void testCircleOpacityAsCameraFunction() {
+  public void testCircleOpacityAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleOpacity(
-            zoom(
-              exponential(
-                stop(2, circleOpacity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleOpacity());
-        assertNotNull(layer.getCircleOpacity().getFunction());
-        assertEquals(CameraFunction.class, layer.getCircleOpacity().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getCircleOpacity().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getCircleOpacity().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getCircleOpacity().getFunction().getStops()).size());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleOpacityAsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleOpacity(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleOpacity());
-        assertNotNull(layer.getCircleOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleOpacity().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getCircleOpacity().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(circleOpacity(0.3f));
+      assertEquals((Float) layer.getCircleOpacity().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testCircleOpacityAsExponentialSourceFunction() {
+  public void testCircleOpacityAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("circle-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleOpacity(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, circleOpacity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleOpacity());
-        assertNotNull(layer.getCircleOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleOpacity().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getCircleOpacity().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("circle-opacity-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleOpacityAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleOpacity(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, circleOpacity(0.3f))
-              )
-            ).withDefaultValue(circleOpacity(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleOpacity());
-        assertNotNull(layer.getCircleOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleOpacity().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getCircleOpacity().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getCircleOpacity().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getCircleOpacity().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getCircleOpacity().getFunction()).getDefaultValue().getValue());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(circleOpacity(expression));
+      assertEquals(layer.getCircleOpacity().getExpression(), expression);
     });
-
   }
 
-  @Test
-  public void testCircleOpacityAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleOpacity(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, circleOpacity(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(circleOpacity(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleOpacity());
-        assertNotNull(layer.getCircleOpacity().getFunction());
-        assertEquals(CompositeFunction.class, layer.getCircleOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getCircleOpacity().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getCircleOpacity().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getCircleOpacity().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getCircleOpacity().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testCircleTranslateTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-translateTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setCircleTranslateTransition(options);
-        assertEquals(layer.getCircleTranslateTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setCircleTranslateTransition(options);
+      assertEquals(layer.getCircleTranslateTransition(), options);
     });
   }
 
@@ -907,47 +299,12 @@ public class CircleLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-translate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(circleTranslate(new Float[] {0f, 0f}));
-        assertEquals((Float[]) layer.getCircleTranslate().getValue(), (Float[]) new Float[] {0f, 0f});
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleTranslateAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-translate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleTranslate(
-            zoom(
-              exponential(
-                stop(2, circleTranslate(new Float[] {0f, 0f}))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleTranslate());
-        assertNotNull(layer.getCircleTranslate().getFunction());
-        assertEquals(CameraFunction.class, layer.getCircleTranslate().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getCircleTranslate().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getCircleTranslate().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getCircleTranslate().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(circleTranslate(new Float[] {0f, 0f}));
+      assertEquals((Float[]) layer.getCircleTranslate().getValue(), (Float[]) new Float[] {0f, 0f});
     });
   }
 
@@ -956,46 +313,12 @@ public class CircleLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-translate-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(circleTranslateAnchor(CIRCLE_TRANSLATE_ANCHOR_MAP));
-        assertEquals((String) layer.getCircleTranslateAnchor().getValue(), (String) CIRCLE_TRANSLATE_ANCHOR_MAP);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleTranslateAnchorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-translate-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleTranslateAnchor(
-            zoom(
-              interval(
-                stop(2, circleTranslateAnchor(CIRCLE_TRANSLATE_ANCHOR_MAP))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleTranslateAnchor());
-        assertNotNull(layer.getCircleTranslateAnchor().getFunction());
-        assertEquals(CameraFunction.class, layer.getCircleTranslateAnchor().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getCircleTranslateAnchor().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getCircleTranslateAnchor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(circleTranslateAnchor(CIRCLE_TRANSLATE_ANCHOR_MAP));
+      assertEquals((String) layer.getCircleTranslateAnchor().getValue(), (String) CIRCLE_TRANSLATE_ANCHOR_MAP);
     });
   }
 
@@ -1004,46 +327,12 @@ public class CircleLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-pitch-scale");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(circlePitchScale(CIRCLE_PITCH_SCALE_MAP));
-        assertEquals((String) layer.getCirclePitchScale().getValue(), (String) CIRCLE_PITCH_SCALE_MAP);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCirclePitchScaleAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-pitch-scale");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circlePitchScale(
-            zoom(
-              interval(
-                stop(2, circlePitchScale(CIRCLE_PITCH_SCALE_MAP))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCirclePitchScale());
-        assertNotNull(layer.getCirclePitchScale().getFunction());
-        assertEquals(CameraFunction.class, layer.getCirclePitchScale().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getCirclePitchScale().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getCirclePitchScale().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(circlePitchScale(CIRCLE_PITCH_SCALE_MAP));
+      assertEquals((String) layer.getCirclePitchScale().getValue(), (String) CIRCLE_PITCH_SCALE_MAP);
     });
   }
 
@@ -1052,46 +341,12 @@ public class CircleLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-pitch-alignment");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(circlePitchAlignment(CIRCLE_PITCH_ALIGNMENT_MAP));
-        assertEquals((String) layer.getCirclePitchAlignment().getValue(), (String) CIRCLE_PITCH_ALIGNMENT_MAP);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCirclePitchAlignmentAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-pitch-alignment");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circlePitchAlignment(
-            zoom(
-              interval(
-                stop(2, circlePitchAlignment(CIRCLE_PITCH_ALIGNMENT_MAP))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCirclePitchAlignment());
-        assertNotNull(layer.getCirclePitchAlignment().getFunction());
-        assertEquals(CameraFunction.class, layer.getCirclePitchAlignment().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getCirclePitchAlignment().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getCirclePitchAlignment().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(circlePitchAlignment(CIRCLE_PITCH_ALIGNMENT_MAP));
+      assertEquals((String) layer.getCirclePitchAlignment().getValue(), (String) CIRCLE_PITCH_ALIGNMENT_MAP);
     });
   }
 
@@ -1100,216 +355,58 @@ public class CircleLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-stroke-widthTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setCircleStrokeWidthTransition(options);
-        assertEquals(layer.getCircleStrokeWidthTransition(), options);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleStrokeWidthAsConstant() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-stroke-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(circleStrokeWidth(0.3f));
-        assertEquals((Float) layer.getCircleStrokeWidth().getValue(), (Float) 0.3f);
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setCircleStrokeWidthTransition(options);
+      assertEquals(layer.getCircleStrokeWidthTransition(), options);
     });
   }
 
   @Test
-  public void testCircleStrokeWidthAsCameraFunction() {
+  public void testCircleStrokeWidthAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-stroke-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleStrokeWidth(
-            zoom(
-              exponential(
-                stop(2, circleStrokeWidth(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleStrokeWidth());
-        assertNotNull(layer.getCircleStrokeWidth().getFunction());
-        assertEquals(CameraFunction.class, layer.getCircleStrokeWidth().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getCircleStrokeWidth().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getCircleStrokeWidth().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getCircleStrokeWidth().getFunction().getStops()).size());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleStrokeWidthAsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-stroke-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleStrokeWidth(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleStrokeWidth());
-        assertNotNull(layer.getCircleStrokeWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleStrokeWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleStrokeWidth().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getCircleStrokeWidth().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(circleStrokeWidth(0.3f));
+      assertEquals((Float) layer.getCircleStrokeWidth().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testCircleStrokeWidthAsExponentialSourceFunction() {
+  public void testCircleStrokeWidthAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("circle-stroke-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleStrokeWidth(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, circleStrokeWidth(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleStrokeWidth());
-        assertNotNull(layer.getCircleStrokeWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleStrokeWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleStrokeWidth().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getCircleStrokeWidth().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("circle-stroke-width-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleStrokeWidthAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-stroke-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleStrokeWidth(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, circleStrokeWidth(0.3f))
-              )
-            ).withDefaultValue(circleStrokeWidth(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleStrokeWidth());
-        assertNotNull(layer.getCircleStrokeWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleStrokeWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleStrokeWidth().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getCircleStrokeWidth().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getCircleStrokeWidth().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getCircleStrokeWidth().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getCircleStrokeWidth().getFunction()).getDefaultValue().getValue());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(circleStrokeWidth(expression));
+      assertEquals(layer.getCircleStrokeWidth().getExpression(), expression);
     });
-
   }
 
-  @Test
-  public void testCircleStrokeWidthAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-stroke-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleStrokeWidth(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, circleStrokeWidth(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(circleStrokeWidth(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleStrokeWidth());
-        assertNotNull(layer.getCircleStrokeWidth().getFunction());
-        assertEquals(CompositeFunction.class, layer.getCircleStrokeWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getCircleStrokeWidth().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getCircleStrokeWidth().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getCircleStrokeWidth().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getCircleStrokeWidth().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testCircleStrokeColorTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-stroke-colorTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setCircleStrokeColorTransition(options);
-        assertEquals(layer.getCircleStrokeColorTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setCircleStrokeColorTransition(options);
+      assertEquals(layer.getCircleStrokeColorTransition(), options);
     });
   }
 
@@ -1318,157 +415,42 @@ public class CircleLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-stroke-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(circleStrokeColor("rgba(0, 0, 0, 1)"));
-        assertEquals((String) layer.getCircleStrokeColor().getValue(), (String) "rgba(0, 0, 0, 1)");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleStrokeColorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-stroke-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleStrokeColor(
-            zoom(
-              exponential(
-                stop(2, circleStrokeColor("rgba(0, 0, 0, 1)"))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleStrokeColor());
-        assertNotNull(layer.getCircleStrokeColor().getFunction());
-        assertEquals(CameraFunction.class, layer.getCircleStrokeColor().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getCircleStrokeColor().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getCircleStrokeColor().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getCircleStrokeColor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(circleStrokeColor("rgba(0, 0, 0, 1)"));
+      assertEquals((String) layer.getCircleStrokeColor().getValue(), (String) "rgba(0, 0, 0, 1)");
     });
   }
 
   @Test
-  public void testCircleStrokeColorAsIdentitySourceFunction() {
+  public void testCircleStrokeColorAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("circle-stroke-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleStrokeColor(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleStrokeColor());
-        assertNotNull(layer.getCircleStrokeColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleStrokeColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleStrokeColor().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getCircleStrokeColor().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("circle-stroke-color-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleStrokeColorAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-stroke-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleStrokeColor(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(Color.RED, circleStrokeColor(Color.RED))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleStrokeColor());
-        assertNotNull(layer.getCircleStrokeColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleStrokeColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleStrokeColor().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getCircleStrokeColor().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = toColor(Expression.get("undefined"));
+      layer.setProperties(circleStrokeColor(expression));
+      assertEquals(layer.getCircleStrokeColor().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testCircleStrokeColorAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-stroke-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleStrokeColor(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop("valueA", circleStrokeColor(Color.RED))
-              )
-            ).withDefaultValue(circleStrokeColor(Color.GREEN))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleStrokeColor());
-        assertNotNull(layer.getCircleStrokeColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleStrokeColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleStrokeColor().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getCircleStrokeColor().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getCircleStrokeColor().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getCircleStrokeColor().getFunction()).getDefaultValue().getValue());
-        assertEquals(Color.GREEN, (int) ((SourceFunction) layer.getCircleStrokeColor().getFunction()).getDefaultValue().getColorInt());
-      }
-    });
-
-  }
 
   @Test
   public void testCircleStrokeColorAsIntConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-stroke-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(circleStrokeColor(Color.RED));
-        assertEquals(layer.getCircleStrokeColorAsInt(), Color.RED);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      layer.setProperties(circleStrokeColor(Color.RED));
+      assertEquals(layer.getCircleStrokeColorAsInt(), Color.RED);
     });
   }
 
@@ -1477,199 +459,43 @@ public class CircleLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-stroke-opacityTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setCircleStrokeOpacityTransition(options);
-        assertEquals(layer.getCircleStrokeOpacityTransition(), options);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleStrokeOpacityAsConstant() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-stroke-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(circleStrokeOpacity(0.3f));
-        assertEquals((Float) layer.getCircleStrokeOpacity().getValue(), (Float) 0.3f);
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setCircleStrokeOpacityTransition(options);
+      assertEquals(layer.getCircleStrokeOpacityTransition(), options);
     });
   }
 
   @Test
-  public void testCircleStrokeOpacityAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-stroke-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleStrokeOpacity(
-            zoom(
-              exponential(
-                stop(2, circleStrokeOpacity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleStrokeOpacity());
-        assertNotNull(layer.getCircleStrokeOpacity().getFunction());
-        assertEquals(CameraFunction.class, layer.getCircleStrokeOpacity().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getCircleStrokeOpacity().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getCircleStrokeOpacity().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getCircleStrokeOpacity().getFunction().getStops()).size());
-      }
-    });
-  }
-
-  @Test
-  public void testCircleStrokeOpacityAsIdentitySourceFunction() {
+  public void testCircleStrokeOpacityAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("circle-stroke-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleStrokeOpacity(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleStrokeOpacity());
-        assertNotNull(layer.getCircleStrokeOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleStrokeOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleStrokeOpacity().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getCircleStrokeOpacity().getFunction().getStops().getClass());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleStrokeOpacityAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-stroke-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleStrokeOpacity(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, circleStrokeOpacity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleStrokeOpacity());
-        assertNotNull(layer.getCircleStrokeOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleStrokeOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleStrokeOpacity().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getCircleStrokeOpacity().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(circleStrokeOpacity(0.3f));
+      assertEquals((Float) layer.getCircleStrokeOpacity().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testCircleStrokeOpacityAsCategoricalSourceFunction() {
+  public void testCircleStrokeOpacityAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("circle-stroke-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleStrokeOpacity(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, circleStrokeOpacity(0.3f))
-              )
-            ).withDefaultValue(circleStrokeOpacity(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleStrokeOpacity());
-        assertNotNull(layer.getCircleStrokeOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getCircleStrokeOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getCircleStrokeOpacity().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getCircleStrokeOpacity().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getCircleStrokeOpacity().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getCircleStrokeOpacity().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getCircleStrokeOpacity().getFunction()).getDefaultValue().getValue());
-      }
-    });
-
-  }
+    Timber.i("circle-stroke-opacity-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testCircleStrokeOpacityAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("circle-stroke-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          circleStrokeOpacity(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, circleStrokeOpacity(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(circleStrokeOpacity(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getCircleStrokeOpacity());
-        assertNotNull(layer.getCircleStrokeOpacity().getFunction());
-        assertEquals(CompositeFunction.class, layer.getCircleStrokeOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getCircleStrokeOpacity().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getCircleStrokeOpacity().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getCircleStrokeOpacity().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getCircleStrokeOpacity().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(circleStrokeOpacity(expression));
+      assertEquals(layer.getCircleStrokeOpacity().getExpression(), expression);
     });
   }
 
-}
+}
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/ExpressionTest.java b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/ExpressionTest.java
new file mode 100644
index 0000000000..c4ff79b053
--- /dev/null
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/ExpressionTest.java
@@ -0,0 +1,207 @@
+package com.mapbox.mapboxsdk.testapp.style;
+
+import android.graphics.Color;
+import android.support.test.runner.AndroidJUnit4;
+
+import com.mapbox.mapboxsdk.style.expressions.Expression;
+import com.mapbox.mapboxsdk.style.layers.FillLayer;
+import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
+import com.mapbox.mapboxsdk.style.sources.Source;
+import com.mapbox.mapboxsdk.testapp.R;
+import com.mapbox.mapboxsdk.testapp.activity.BaseActivityTest;
+import com.mapbox.mapboxsdk.testapp.activity.espresso.EspressoTestActivity;
+import com.mapbox.mapboxsdk.testapp.utils.ResourceUtils;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.io.IOException;
+
+import timber.log.Timber;
+
+import static com.mapbox.mapboxsdk.style.expressions.Expression.exponential;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.get;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.interpolate;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.literal;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.match;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.rgb;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.rgba;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.step;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.stop;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.string;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.toColor;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.zoom;
+import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillAntialias;
+import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillColor;
+import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillOutlineColor;
+import static com.mapbox.mapboxsdk.testapp.action.MapboxMapAction.invoke;
+import static org.junit.Assert.assertEquals;
+
+@RunWith(AndroidJUnit4.class)
+public class ExpressionTest extends BaseActivityTest {
+
+  private FillLayer layer;
+
+  @Test
+  public void testConstantExpressionConversion() {
+    validateTestSetup();
+    setupStyle();
+    Timber.i("camera function");
+
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      // create color expression
+      Expression inputExpression = rgba(255.0f, 0.0f, 0.0f, 1.0f);
+
+      // set color expression
+      layer.setProperties(
+        fillColor(inputExpression)
+      );
+
+      // get color value
+      int color = layer.getFillColor().getColorInt();
+
+      // compare
+      assertEquals("input expression should match", Color.RED, color);
+    });
+  }
+
+  @Test
+  public void testGetExpressionWrapping() {
+    validateTestSetup();
+    setupStyle();
+    Timber.i("camera function");
+
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      // create get expression
+      Expression inputExpression = get("fill");
+
+      // set get expression
+      layer.setProperties(
+        fillColor(inputExpression)
+      );
+
+      // get actual expression
+      Expression actualExpression = layer.getFillColor().getExpression();
+
+      // create wrapped expected expression
+      Expression expectedExpression = toColor(get("fill"));
+
+      // compare
+      assertEquals("input expression should match", expectedExpression, actualExpression);
+    });
+  }
+
+  @Test
+  public void testCameraFunction() {
+    validateTestSetup();
+    setupStyle();
+    Timber.i("camera function");
+
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      // create camera function expression
+      Expression inputExpression = interpolate(
+        exponential(0.5f), zoom(),
+        stop(1.0f, rgba(255.0f, 0.0f, 0.0f, 1.0f)),
+        stop(5.0f, rgba(0.0f, 0.0f, 255.0f, 1.0f)),
+        stop(10.0f, rgba(0.0f, 255.0f, 0.0f, 1.0f))
+      );
+
+      // set camera function expression
+      layer.setProperties(
+        fillColor(inputExpression)
+      );
+
+      // get camera function expression
+      Expression outputExpression = layer.getFillColor().getExpression();
+
+      // compare
+      assertEquals("input expression should match", inputExpression, outputExpression);
+    });
+  }
+
+  @Test
+  public void testSourceFunction() {
+    validateTestSetup();
+    setupStyle();
+    Timber.i("camera function");
+
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      // create camera function expression
+      Expression inputExpression = toColor(get("fill"));
+
+      // set camera function expression
+      layer.setProperties(
+        fillColor(inputExpression)
+      );
+
+      // get camera function expression
+      Expression outputExpression = layer.getFillColor().getExpression();
+
+      // compare
+      assertEquals("input expression should match", inputExpression, outputExpression);
+    });
+  }
+
+  @Test
+  public void testCompositeFunction() {
+    validateTestSetup();
+    setupStyle();
+    Timber.i("camera function");
+
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      // create camera function expression
+      Expression inputExpression = step(zoom(),
+        rgba(255.0f, 255.0f, 255.0f, 1.0f),
+        stop(7.0f, match(
+          string(get("name")),
+          literal("Westerpark"), rgba(255.0f, 0.0f, 0.0f, 1.0f),
+          rgba(255.0f, 255.0f, 255.0f, 1.0f)
+        )),
+        stop(8.0f, match(
+          string(get("name")),
+          literal("Westerpark"), rgba(0.0f, 0.0f, 255.0f, 1.0f),
+          rgba(255.0f, 255.0f, 255.0f, 1.0f)
+        ))
+      );
+
+      // set camera function expression
+      layer.setProperties(
+        fillColor(inputExpression)
+      );
+
+      // get camera function expression
+      Expression outputExpression = layer.getFillColor().getExpression();
+
+      // compare
+      assertEquals("input expression should match", inputExpression, outputExpression);
+    });
+  }
+
+  private void setupStyle() {
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      // Add a source
+      Source source;
+      try {
+        source = new GeoJsonSource("amsterdam-parks-source",
+          ResourceUtils.readRawResource(rule.getActivity(), R.raw.amsterdam));
+        mapboxMap.addSource(source);
+      } catch (IOException ioException) {
+        return;
+      }
+
+      // Add a fill layer
+      mapboxMap.addLayer(layer = new FillLayer("amsterdam-parks-layer", source.getId())
+        .withProperties(
+          fillColor(rgba(0.0f, 0.0f, 0.0f, 0.5f)),
+          fillOutlineColor(rgb(0, 0, 255)),
+          fillAntialias(true)
+        )
+      );
+    });
+  }
+
+  @Override
+  protected Class getActivityClass() {
+    return EspressoTestActivity.class;
+  }
+}
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/FillExtrusionLayerTest.java b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/FillExtrusionLayerTest.java
index 66c6093537..dd8929e2f4 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/FillExtrusionLayerTest.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/FillExtrusionLayerTest.java
@@ -3,31 +3,18 @@
 package com.mapbox.mapboxsdk.testapp.style;
 
 import android.graphics.Color;
-import android.support.test.espresso.UiController;
 import android.support.test.runner.AndroidJUnit4;
 
 import timber.log.Timber;
 
-import com.mapbox.mapboxsdk.maps.MapboxMap;
-import com.mapbox.mapboxsdk.style.functions.CompositeFunction;
-import com.mapbox.mapboxsdk.style.functions.CameraFunction;
-import com.mapbox.mapboxsdk.style.functions.SourceFunction;
-import com.mapbox.mapboxsdk.style.functions.stops.CategoricalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.ExponentialStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IdentityStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IntervalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.Stop;
-import com.mapbox.mapboxsdk.style.functions.stops.Stops;
+import com.mapbox.mapboxsdk.style.expressions.Expression;
 import com.mapbox.mapboxsdk.style.layers.FillExtrusionLayer;
-import com.mapbox.mapboxsdk.testapp.action.MapboxMapAction;
 import com.mapbox.mapboxsdk.testapp.activity.BaseActivityTest;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import static com.mapbox.mapboxsdk.style.functions.Function.*;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stop.stop;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stops.*;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.*;
 import static com.mapbox.mapboxsdk.testapp.action.MapboxMapAction.invoke;
 import static org.junit.Assert.*;
 import static com.mapbox.mapboxsdk.style.layers.Property.*;
@@ -51,17 +38,14 @@ public class FillExtrusionLayerTest extends BaseActivityTest {
 
   private void setupLayer() {
     Timber.i("Retrieving layer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
-          Timber.i("Adding layer");
-          layer = new FillExtrusionLayer("my-layer", "composite");
-          layer.setSourceLayer("composite");
-          mapboxMap.addLayer(layer);
-          // Layer reference is now stale, get new reference
-          layer = mapboxMap.getLayerAs("my-layer");
-        }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
+        Timber.i("Adding layer");
+        layer = new FillExtrusionLayer("my-layer", "composite");
+        layer.setSourceLayer("composite");
+        mapboxMap.addLayer(layer);
+        // Layer reference is now stale, get new reference
+        layer = mapboxMap.getLayerAs("my-layer");
       }
     });
   }
@@ -71,18 +55,15 @@ public class FillExtrusionLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("Visibility");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Get initial
-        assertEquals(layer.getVisibility().getValue(), VISIBLE);
+      // Get initial
+      assertEquals(layer.getVisibility().getValue(), VISIBLE);
 
-        // Set
-        layer.setProperties(visibility(NONE));
-        assertEquals(layer.getVisibility().getValue(), NONE);
-      }
+      // Set
+      layer.setProperties(visibility(NONE));
+      assertEquals(layer.getVisibility().getValue(), NONE);
     });
   }
 
@@ -91,19 +72,16 @@ public class FillExtrusionLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("SourceLayer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Get initial
-        assertEquals(layer.getSourceLayer(), "composite");
-
-        // Set
-        final String sourceLayer = "test";
-        layer.setSourceLayer(sourceLayer);
-        assertEquals(layer.getSourceLayer(), sourceLayer);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Get initial
+      assertEquals(layer.getSourceLayer(), "composite");
+
+      // Set
+      final String sourceLayer = "test";
+      layer.setSourceLayer(sourceLayer);
+      assertEquals(layer.getSourceLayer(), sourceLayer);
     });
   }
 
@@ -112,16 +90,13 @@ public class FillExtrusionLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-extrusion-opacityTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setFillExtrusionOpacityTransition(options);
-        assertEquals(layer.getFillExtrusionOpacityTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setFillExtrusionOpacityTransition(options);
+      assertEquals(layer.getFillExtrusionOpacityTransition(), options);
     });
   }
 
@@ -130,47 +105,12 @@ public class FillExtrusionLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-extrusion-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillExtrusionOpacity(0.3f));
-        assertEquals((Float) layer.getFillExtrusionOpacity().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillExtrusionOpacityAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-extrusion-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionOpacity(
-            zoom(
-              exponential(
-                stop(2, fillExtrusionOpacity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionOpacity());
-        assertNotNull(layer.getFillExtrusionOpacity().getFunction());
-        assertEquals(CameraFunction.class, layer.getFillExtrusionOpacity().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getFillExtrusionOpacity().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getFillExtrusionOpacity().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getFillExtrusionOpacity().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(fillExtrusionOpacity(0.3f));
+      assertEquals((Float) layer.getFillExtrusionOpacity().getValue(), (Float) 0.3f);
     });
   }
 
@@ -179,16 +119,13 @@ public class FillExtrusionLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-extrusion-colorTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setFillExtrusionColorTransition(options);
-        assertEquals(layer.getFillExtrusionColorTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setFillExtrusionColorTransition(options);
+      assertEquals(layer.getFillExtrusionColorTransition(), options);
     });
   }
 
@@ -197,157 +134,42 @@ public class FillExtrusionLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-extrusion-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillExtrusionColor("rgba(0, 0, 0, 1)"));
-        assertEquals((String) layer.getFillExtrusionColor().getValue(), (String) "rgba(0, 0, 0, 1)");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillExtrusionColorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-extrusion-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionColor(
-            zoom(
-              exponential(
-                stop(2, fillExtrusionColor("rgba(0, 0, 0, 1)"))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionColor());
-        assertNotNull(layer.getFillExtrusionColor().getFunction());
-        assertEquals(CameraFunction.class, layer.getFillExtrusionColor().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getFillExtrusionColor().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getFillExtrusionColor().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getFillExtrusionColor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(fillExtrusionColor("rgba(0, 0, 0, 1)"));
+      assertEquals((String) layer.getFillExtrusionColor().getValue(), (String) "rgba(0, 0, 0, 1)");
     });
   }
 
   @Test
-  public void testFillExtrusionColorAsIdentitySourceFunction() {
+  public void testFillExtrusionColorAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("fill-extrusion-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionColor(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionColor());
-        assertNotNull(layer.getFillExtrusionColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillExtrusionColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillExtrusionColor().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getFillExtrusionColor().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("fill-extrusion-color-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillExtrusionColorAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-extrusion-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionColor(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(Color.RED, fillExtrusionColor(Color.RED))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionColor());
-        assertNotNull(layer.getFillExtrusionColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillExtrusionColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillExtrusionColor().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getFillExtrusionColor().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = toColor(Expression.get("undefined"));
+      layer.setProperties(fillExtrusionColor(expression));
+      assertEquals(layer.getFillExtrusionColor().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testFillExtrusionColorAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-extrusion-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionColor(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop("valueA", fillExtrusionColor(Color.RED))
-              )
-            ).withDefaultValue(fillExtrusionColor(Color.GREEN))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionColor());
-        assertNotNull(layer.getFillExtrusionColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillExtrusionColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillExtrusionColor().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getFillExtrusionColor().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getFillExtrusionColor().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getFillExtrusionColor().getFunction()).getDefaultValue().getValue());
-        assertEquals(Color.GREEN, (int) ((SourceFunction) layer.getFillExtrusionColor().getFunction()).getDefaultValue().getColorInt());
-      }
-    });
-
-  }
 
   @Test
   public void testFillExtrusionColorAsIntConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-extrusion-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillExtrusionColor(Color.RED));
-        assertEquals(layer.getFillExtrusionColorAsInt(), Color.RED);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      layer.setProperties(fillExtrusionColor(Color.RED));
+      assertEquals(layer.getFillExtrusionColorAsInt(), Color.RED);
     });
   }
 
@@ -356,16 +178,13 @@ public class FillExtrusionLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-extrusion-translateTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setFillExtrusionTranslateTransition(options);
-        assertEquals(layer.getFillExtrusionTranslateTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setFillExtrusionTranslateTransition(options);
+      assertEquals(layer.getFillExtrusionTranslateTransition(), options);
     });
   }
 
@@ -374,47 +193,12 @@ public class FillExtrusionLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-extrusion-translate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillExtrusionTranslate(new Float[] {0f, 0f}));
-        assertEquals((Float[]) layer.getFillExtrusionTranslate().getValue(), (Float[]) new Float[] {0f, 0f});
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillExtrusionTranslateAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-extrusion-translate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionTranslate(
-            zoom(
-              exponential(
-                stop(2, fillExtrusionTranslate(new Float[] {0f, 0f}))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionTranslate());
-        assertNotNull(layer.getFillExtrusionTranslate().getFunction());
-        assertEquals(CameraFunction.class, layer.getFillExtrusionTranslate().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getFillExtrusionTranslate().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getFillExtrusionTranslate().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getFillExtrusionTranslate().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(fillExtrusionTranslate(new Float[] {0f, 0f}));
+      assertEquals((Float[]) layer.getFillExtrusionTranslate().getValue(), (Float[]) new Float[] {0f, 0f});
     });
   }
 
@@ -423,46 +207,12 @@ public class FillExtrusionLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-extrusion-translate-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillExtrusionTranslateAnchor(FILL_EXTRUSION_TRANSLATE_ANCHOR_MAP));
-        assertEquals((String) layer.getFillExtrusionTranslateAnchor().getValue(), (String) FILL_EXTRUSION_TRANSLATE_ANCHOR_MAP);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillExtrusionTranslateAnchorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-extrusion-translate-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionTranslateAnchor(
-            zoom(
-              interval(
-                stop(2, fillExtrusionTranslateAnchor(FILL_EXTRUSION_TRANSLATE_ANCHOR_MAP))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionTranslateAnchor());
-        assertNotNull(layer.getFillExtrusionTranslateAnchor().getFunction());
-        assertEquals(CameraFunction.class, layer.getFillExtrusionTranslateAnchor().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getFillExtrusionTranslateAnchor().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getFillExtrusionTranslateAnchor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(fillExtrusionTranslateAnchor(FILL_EXTRUSION_TRANSLATE_ANCHOR_MAP));
+      assertEquals((String) layer.getFillExtrusionTranslateAnchor().getValue(), (String) FILL_EXTRUSION_TRANSLATE_ANCHOR_MAP);
     });
   }
 
@@ -471,16 +221,13 @@ public class FillExtrusionLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-extrusion-patternTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setFillExtrusionPatternTransition(options);
-        assertEquals(layer.getFillExtrusionPatternTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setFillExtrusionPatternTransition(options);
+      assertEquals(layer.getFillExtrusionPatternTransition(), options);
     });
   }
 
@@ -489,46 +236,12 @@ public class FillExtrusionLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-extrusion-pattern");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillExtrusionPattern("pedestrian-polygon"));
-        assertEquals((String) layer.getFillExtrusionPattern().getValue(), (String) "pedestrian-polygon");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillExtrusionPatternAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-extrusion-pattern");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionPattern(
-            zoom(
-              interval(
-                stop(2, fillExtrusionPattern("pedestrian-polygon"))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionPattern());
-        assertNotNull(layer.getFillExtrusionPattern().getFunction());
-        assertEquals(CameraFunction.class, layer.getFillExtrusionPattern().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getFillExtrusionPattern().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getFillExtrusionPattern().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(fillExtrusionPattern("pedestrian-polygon"));
+      assertEquals((String) layer.getFillExtrusionPattern().getValue(), (String) "pedestrian-polygon");
     });
   }
 
@@ -537,216 +250,58 @@ public class FillExtrusionLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-extrusion-heightTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setFillExtrusionHeightTransition(options);
-        assertEquals(layer.getFillExtrusionHeightTransition(), options);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillExtrusionHeightAsConstant() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-extrusion-height");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillExtrusionHeight(0.3f));
-        assertEquals((Float) layer.getFillExtrusionHeight().getValue(), (Float) 0.3f);
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setFillExtrusionHeightTransition(options);
+      assertEquals(layer.getFillExtrusionHeightTransition(), options);
     });
   }
 
   @Test
-  public void testFillExtrusionHeightAsCameraFunction() {
+  public void testFillExtrusionHeightAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-extrusion-height");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionHeight(
-            zoom(
-              exponential(
-                stop(2, fillExtrusionHeight(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionHeight());
-        assertNotNull(layer.getFillExtrusionHeight().getFunction());
-        assertEquals(CameraFunction.class, layer.getFillExtrusionHeight().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getFillExtrusionHeight().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getFillExtrusionHeight().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getFillExtrusionHeight().getFunction().getStops()).size());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillExtrusionHeightAsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-extrusion-height");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionHeight(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionHeight());
-        assertNotNull(layer.getFillExtrusionHeight().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillExtrusionHeight().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillExtrusionHeight().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getFillExtrusionHeight().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(fillExtrusionHeight(0.3f));
+      assertEquals((Float) layer.getFillExtrusionHeight().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testFillExtrusionHeightAsExponentialSourceFunction() {
+  public void testFillExtrusionHeightAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("fill-extrusion-height");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionHeight(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, fillExtrusionHeight(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionHeight());
-        assertNotNull(layer.getFillExtrusionHeight().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillExtrusionHeight().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillExtrusionHeight().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getFillExtrusionHeight().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("fill-extrusion-height-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillExtrusionHeightAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-extrusion-height");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionHeight(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, fillExtrusionHeight(0.3f))
-              )
-            ).withDefaultValue(fillExtrusionHeight(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionHeight());
-        assertNotNull(layer.getFillExtrusionHeight().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillExtrusionHeight().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillExtrusionHeight().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getFillExtrusionHeight().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getFillExtrusionHeight().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getFillExtrusionHeight().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getFillExtrusionHeight().getFunction()).getDefaultValue().getValue());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(fillExtrusionHeight(expression));
+      assertEquals(layer.getFillExtrusionHeight().getExpression(), expression);
     });
-
   }
 
-  @Test
-  public void testFillExtrusionHeightAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-extrusion-height");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionHeight(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, fillExtrusionHeight(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(fillExtrusionHeight(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionHeight());
-        assertNotNull(layer.getFillExtrusionHeight().getFunction());
-        assertEquals(CompositeFunction.class, layer.getFillExtrusionHeight().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getFillExtrusionHeight().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getFillExtrusionHeight().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getFillExtrusionHeight().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getFillExtrusionHeight().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testFillExtrusionBaseTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-extrusion-baseTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setFillExtrusionBaseTransition(options);
-        assertEquals(layer.getFillExtrusionBaseTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setFillExtrusionBaseTransition(options);
+      assertEquals(layer.getFillExtrusionBaseTransition(), options);
     });
   }
 
@@ -755,181 +310,28 @@ public class FillExtrusionLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-extrusion-base");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillExtrusionBase(0.3f));
-        assertEquals((Float) layer.getFillExtrusionBase().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillExtrusionBaseAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-extrusion-base");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionBase(
-            zoom(
-              exponential(
-                stop(2, fillExtrusionBase(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionBase());
-        assertNotNull(layer.getFillExtrusionBase().getFunction());
-        assertEquals(CameraFunction.class, layer.getFillExtrusionBase().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getFillExtrusionBase().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getFillExtrusionBase().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getFillExtrusionBase().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(fillExtrusionBase(0.3f));
+      assertEquals((Float) layer.getFillExtrusionBase().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testFillExtrusionBaseAsIdentitySourceFunction() {
+  public void testFillExtrusionBaseAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("fill-extrusion-base");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionBase(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionBase());
-        assertNotNull(layer.getFillExtrusionBase().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillExtrusionBase().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillExtrusionBase().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getFillExtrusionBase().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("fill-extrusion-base-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillExtrusionBaseAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-extrusion-base");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionBase(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, fillExtrusionBase(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionBase());
-        assertNotNull(layer.getFillExtrusionBase().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillExtrusionBase().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillExtrusionBase().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getFillExtrusionBase().getFunction().getStops().getClass());
-      }
-    });
-  }
-
-  @Test
-  public void testFillExtrusionBaseAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-extrusion-base");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionBase(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, fillExtrusionBase(0.3f))
-              )
-            ).withDefaultValue(fillExtrusionBase(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionBase());
-        assertNotNull(layer.getFillExtrusionBase().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillExtrusionBase().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillExtrusionBase().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getFillExtrusionBase().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getFillExtrusionBase().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getFillExtrusionBase().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getFillExtrusionBase().getFunction()).getDefaultValue().getValue());
-      }
-    });
-
-  }
-
-  @Test
-  public void testFillExtrusionBaseAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-extrusion-base");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillExtrusionBase(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, fillExtrusionBase(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(fillExtrusionBase(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillExtrusionBase());
-        assertNotNull(layer.getFillExtrusionBase().getFunction());
-        assertEquals(CompositeFunction.class, layer.getFillExtrusionBase().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getFillExtrusionBase().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getFillExtrusionBase().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getFillExtrusionBase().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getFillExtrusionBase().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(fillExtrusionBase(expression));
+      assertEquals(layer.getFillExtrusionBase().getExpression(), expression);
     });
   }
 
-}
+}
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/FillLayerTest.java b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/FillLayerTest.java
index 939bcb6892..c70ea39ffa 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/FillLayerTest.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/FillLayerTest.java
@@ -3,31 +3,18 @@
 package com.mapbox.mapboxsdk.testapp.style;
 
 import android.graphics.Color;
-import android.support.test.espresso.UiController;
 import android.support.test.runner.AndroidJUnit4;
 
 import timber.log.Timber;
 
-import com.mapbox.mapboxsdk.maps.MapboxMap;
-import com.mapbox.mapboxsdk.style.functions.CompositeFunction;
-import com.mapbox.mapboxsdk.style.functions.CameraFunction;
-import com.mapbox.mapboxsdk.style.functions.SourceFunction;
-import com.mapbox.mapboxsdk.style.functions.stops.CategoricalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.ExponentialStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IdentityStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IntervalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.Stop;
-import com.mapbox.mapboxsdk.style.functions.stops.Stops;
+import com.mapbox.mapboxsdk.style.expressions.Expression;
 import com.mapbox.mapboxsdk.style.layers.FillLayer;
-import com.mapbox.mapboxsdk.testapp.action.MapboxMapAction;
 import com.mapbox.mapboxsdk.testapp.activity.BaseActivityTest;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import static com.mapbox.mapboxsdk.style.functions.Function.*;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stop.stop;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stops.*;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.*;
 import static com.mapbox.mapboxsdk.testapp.action.MapboxMapAction.invoke;
 import static org.junit.Assert.*;
 import static com.mapbox.mapboxsdk.style.layers.Property.*;
@@ -51,17 +38,14 @@ public class FillLayerTest extends BaseActivityTest {
 
   private void setupLayer() {
     Timber.i("Retrieving layer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
-          Timber.i("Adding layer");
-          layer = new FillLayer("my-layer", "composite");
-          layer.setSourceLayer("composite");
-          mapboxMap.addLayer(layer);
-          // Layer reference is now stale, get new reference
-          layer = mapboxMap.getLayerAs("my-layer");
-        }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
+        Timber.i("Adding layer");
+        layer = new FillLayer("my-layer", "composite");
+        layer.setSourceLayer("composite");
+        mapboxMap.addLayer(layer);
+        // Layer reference is now stale, get new reference
+        layer = mapboxMap.getLayerAs("my-layer");
       }
     });
   }
@@ -71,18 +55,15 @@ public class FillLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("Visibility");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Get initial
-        assertEquals(layer.getVisibility().getValue(), VISIBLE);
+      // Get initial
+      assertEquals(layer.getVisibility().getValue(), VISIBLE);
 
-        // Set
-        layer.setProperties(visibility(NONE));
-        assertEquals(layer.getVisibility().getValue(), NONE);
-      }
+      // Set
+      layer.setProperties(visibility(NONE));
+      assertEquals(layer.getVisibility().getValue(), NONE);
     });
   }
 
@@ -91,19 +72,16 @@ public class FillLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("SourceLayer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Get initial
-        assertEquals(layer.getSourceLayer(), "composite");
-
-        // Set
-        final String sourceLayer = "test";
-        layer.setSourceLayer(sourceLayer);
-        assertEquals(layer.getSourceLayer(), sourceLayer);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Get initial
+      assertEquals(layer.getSourceLayer(), "composite");
+
+      // Set
+      final String sourceLayer = "test";
+      layer.setSourceLayer(sourceLayer);
+      assertEquals(layer.getSourceLayer(), sourceLayer);
     });
   }
 
@@ -112,46 +90,12 @@ public class FillLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-antialias");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillAntialias(true));
-        assertEquals((Boolean) layer.getFillAntialias().getValue(), (Boolean) true);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillAntialiasAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-antialias");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillAntialias(
-            zoom(
-              interval(
-                stop(2, fillAntialias(true))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillAntialias());
-        assertNotNull(layer.getFillAntialias().getFunction());
-        assertEquals(CameraFunction.class, layer.getFillAntialias().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getFillAntialias().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getFillAntialias().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(fillAntialias(true));
+      assertEquals((Boolean) layer.getFillAntialias().getValue(), (Boolean) true);
     });
   }
 
@@ -160,16 +104,13 @@ public class FillLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-opacityTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setFillOpacityTransition(options);
-        assertEquals(layer.getFillOpacityTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setFillOpacityTransition(options);
+      assertEquals(layer.getFillOpacityTransition(), options);
     });
   }
 
@@ -178,198 +119,43 @@ public class FillLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillOpacity(0.3f));
-        assertEquals((Float) layer.getFillOpacity().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillOpacityAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillOpacity(
-            zoom(
-              exponential(
-                stop(2, fillOpacity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillOpacity());
-        assertNotNull(layer.getFillOpacity().getFunction());
-        assertEquals(CameraFunction.class, layer.getFillOpacity().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getFillOpacity().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getFillOpacity().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getFillOpacity().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(fillOpacity(0.3f));
+      assertEquals((Float) layer.getFillOpacity().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testFillOpacityAsIdentitySourceFunction() {
+  public void testFillOpacityAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("fill-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillOpacity(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getFillOpacity());
-        assertNotNull(layer.getFillOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillOpacity().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getFillOpacity().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("fill-opacity-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillOpacityAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillOpacity(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, fillOpacity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillOpacity());
-        assertNotNull(layer.getFillOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillOpacity().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getFillOpacity().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(fillOpacity(expression));
+      assertEquals(layer.getFillOpacity().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testFillOpacityAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillOpacity(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, fillOpacity(0.3f))
-              )
-            ).withDefaultValue(fillOpacity(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillOpacity());
-        assertNotNull(layer.getFillOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillOpacity().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getFillOpacity().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getFillOpacity().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getFillOpacity().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getFillOpacity().getFunction()).getDefaultValue().getValue());
-      }
-    });
-
-  }
-
-  @Test
-  public void testFillOpacityAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillOpacity(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, fillOpacity(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(fillOpacity(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillOpacity());
-        assertNotNull(layer.getFillOpacity().getFunction());
-        assertEquals(CompositeFunction.class, layer.getFillOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getFillOpacity().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getFillOpacity().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getFillOpacity().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getFillOpacity().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testFillColorTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-colorTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setFillColorTransition(options);
-        assertEquals(layer.getFillColorTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setFillColorTransition(options);
+      assertEquals(layer.getFillColorTransition(), options);
     });
   }
 
@@ -378,157 +164,42 @@ public class FillLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillColor("rgba(0, 0, 0, 1)"));
-        assertEquals((String) layer.getFillColor().getValue(), (String) "rgba(0, 0, 0, 1)");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillColorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillColor(
-            zoom(
-              exponential(
-                stop(2, fillColor("rgba(0, 0, 0, 1)"))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillColor());
-        assertNotNull(layer.getFillColor().getFunction());
-        assertEquals(CameraFunction.class, layer.getFillColor().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getFillColor().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getFillColor().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getFillColor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(fillColor("rgba(0, 0, 0, 1)"));
+      assertEquals((String) layer.getFillColor().getValue(), (String) "rgba(0, 0, 0, 1)");
     });
   }
 
   @Test
-  public void testFillColorAsIdentitySourceFunction() {
+  public void testFillColorAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("fill-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillColor(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getFillColor());
-        assertNotNull(layer.getFillColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillColor().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getFillColor().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("fill-color-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillColorAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillColor(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(Color.RED, fillColor(Color.RED))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillColor());
-        assertNotNull(layer.getFillColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillColor().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getFillColor().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = toColor(Expression.get("undefined"));
+      layer.setProperties(fillColor(expression));
+      assertEquals(layer.getFillColor().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testFillColorAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillColor(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop("valueA", fillColor(Color.RED))
-              )
-            ).withDefaultValue(fillColor(Color.GREEN))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillColor());
-        assertNotNull(layer.getFillColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillColor().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getFillColor().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getFillColor().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getFillColor().getFunction()).getDefaultValue().getValue());
-        assertEquals(Color.GREEN, (int) ((SourceFunction) layer.getFillColor().getFunction()).getDefaultValue().getColorInt());
-      }
-    });
-
-  }
 
   @Test
   public void testFillColorAsIntConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillColor(Color.RED));
-        assertEquals(layer.getFillColorAsInt(), Color.RED);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      layer.setProperties(fillColor(Color.RED));
+      assertEquals(layer.getFillColorAsInt(), Color.RED);
     });
   }
 
@@ -537,16 +208,13 @@ public class FillLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-outline-colorTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setFillOutlineColorTransition(options);
-        assertEquals(layer.getFillOutlineColorTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setFillOutlineColorTransition(options);
+      assertEquals(layer.getFillOutlineColorTransition(), options);
     });
   }
 
@@ -555,157 +223,42 @@ public class FillLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-outline-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillOutlineColor("rgba(0, 0, 0, 1)"));
-        assertEquals((String) layer.getFillOutlineColor().getValue(), (String) "rgba(0, 0, 0, 1)");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillOutlineColorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-outline-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillOutlineColor(
-            zoom(
-              exponential(
-                stop(2, fillOutlineColor("rgba(0, 0, 0, 1)"))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillOutlineColor());
-        assertNotNull(layer.getFillOutlineColor().getFunction());
-        assertEquals(CameraFunction.class, layer.getFillOutlineColor().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getFillOutlineColor().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getFillOutlineColor().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getFillOutlineColor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(fillOutlineColor("rgba(0, 0, 0, 1)"));
+      assertEquals((String) layer.getFillOutlineColor().getValue(), (String) "rgba(0, 0, 0, 1)");
     });
   }
 
   @Test
-  public void testFillOutlineColorAsIdentitySourceFunction() {
+  public void testFillOutlineColorAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("fill-outline-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillOutlineColor(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getFillOutlineColor());
-        assertNotNull(layer.getFillOutlineColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillOutlineColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillOutlineColor().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getFillOutlineColor().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("fill-outline-color-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillOutlineColorAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-outline-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillOutlineColor(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(Color.RED, fillOutlineColor(Color.RED))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillOutlineColor());
-        assertNotNull(layer.getFillOutlineColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillOutlineColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillOutlineColor().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getFillOutlineColor().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = toColor(Expression.get("undefined"));
+      layer.setProperties(fillOutlineColor(expression));
+      assertEquals(layer.getFillOutlineColor().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testFillOutlineColorAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-outline-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillOutlineColor(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop("valueA", fillOutlineColor(Color.RED))
-              )
-            ).withDefaultValue(fillOutlineColor(Color.GREEN))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillOutlineColor());
-        assertNotNull(layer.getFillOutlineColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getFillOutlineColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getFillOutlineColor().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getFillOutlineColor().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getFillOutlineColor().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getFillOutlineColor().getFunction()).getDefaultValue().getValue());
-        assertEquals(Color.GREEN, (int) ((SourceFunction) layer.getFillOutlineColor().getFunction()).getDefaultValue().getColorInt());
-      }
-    });
-
-  }
 
   @Test
   public void testFillOutlineColorAsIntConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-outline-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillOutlineColor(Color.RED));
-        assertEquals(layer.getFillOutlineColorAsInt(), Color.RED);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      layer.setProperties(fillOutlineColor(Color.RED));
+      assertEquals(layer.getFillOutlineColorAsInt(), Color.RED);
     });
   }
 
@@ -714,16 +267,13 @@ public class FillLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-translateTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setFillTranslateTransition(options);
-        assertEquals(layer.getFillTranslateTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setFillTranslateTransition(options);
+      assertEquals(layer.getFillTranslateTransition(), options);
     });
   }
 
@@ -732,47 +282,12 @@ public class FillLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-translate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillTranslate(new Float[] {0f, 0f}));
-        assertEquals((Float[]) layer.getFillTranslate().getValue(), (Float[]) new Float[] {0f, 0f});
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillTranslateAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-translate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillTranslate(
-            zoom(
-              exponential(
-                stop(2, fillTranslate(new Float[] {0f, 0f}))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillTranslate());
-        assertNotNull(layer.getFillTranslate().getFunction());
-        assertEquals(CameraFunction.class, layer.getFillTranslate().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getFillTranslate().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getFillTranslate().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getFillTranslate().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(fillTranslate(new Float[] {0f, 0f}));
+      assertEquals((Float[]) layer.getFillTranslate().getValue(), (Float[]) new Float[] {0f, 0f});
     });
   }
 
@@ -781,46 +296,12 @@ public class FillLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-translate-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillTranslateAnchor(FILL_TRANSLATE_ANCHOR_MAP));
-        assertEquals((String) layer.getFillTranslateAnchor().getValue(), (String) FILL_TRANSLATE_ANCHOR_MAP);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillTranslateAnchorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-translate-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillTranslateAnchor(
-            zoom(
-              interval(
-                stop(2, fillTranslateAnchor(FILL_TRANSLATE_ANCHOR_MAP))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillTranslateAnchor());
-        assertNotNull(layer.getFillTranslateAnchor().getFunction());
-        assertEquals(CameraFunction.class, layer.getFillTranslateAnchor().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getFillTranslateAnchor().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getFillTranslateAnchor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(fillTranslateAnchor(FILL_TRANSLATE_ANCHOR_MAP));
+      assertEquals((String) layer.getFillTranslateAnchor().getValue(), (String) FILL_TRANSLATE_ANCHOR_MAP);
     });
   }
 
@@ -829,16 +310,13 @@ public class FillLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-patternTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setFillPatternTransition(options);
-        assertEquals(layer.getFillPatternTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setFillPatternTransition(options);
+      assertEquals(layer.getFillPatternTransition(), options);
     });
   }
 
@@ -847,47 +325,12 @@ public class FillLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("fill-pattern");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(fillPattern("pedestrian-polygon"));
-        assertEquals((String) layer.getFillPattern().getValue(), (String) "pedestrian-polygon");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testFillPatternAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("fill-pattern");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          fillPattern(
-            zoom(
-              interval(
-                stop(2, fillPattern("pedestrian-polygon"))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getFillPattern());
-        assertNotNull(layer.getFillPattern().getFunction());
-        assertEquals(CameraFunction.class, layer.getFillPattern().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getFillPattern().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getFillPattern().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(fillPattern("pedestrian-polygon"));
+      assertEquals((String) layer.getFillPattern().getValue(), (String) "pedestrian-polygon");
     });
   }
-
-}
+}
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/HeatmapLayerTest.java b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/HeatmapLayerTest.java
index 364c8d2679..9a0374a763 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/HeatmapLayerTest.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/HeatmapLayerTest.java
@@ -3,31 +3,18 @@
 package com.mapbox.mapboxsdk.testapp.style;
 
 import android.graphics.Color;
-import android.support.test.espresso.UiController;
 import android.support.test.runner.AndroidJUnit4;
 
 import timber.log.Timber;
 
-import com.mapbox.mapboxsdk.maps.MapboxMap;
-import com.mapbox.mapboxsdk.style.functions.CompositeFunction;
-import com.mapbox.mapboxsdk.style.functions.CameraFunction;
-import com.mapbox.mapboxsdk.style.functions.SourceFunction;
-import com.mapbox.mapboxsdk.style.functions.stops.CategoricalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.ExponentialStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IdentityStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IntervalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.Stop;
-import com.mapbox.mapboxsdk.style.functions.stops.Stops;
+import com.mapbox.mapboxsdk.style.expressions.Expression;
 import com.mapbox.mapboxsdk.style.layers.HeatmapLayer;
-import com.mapbox.mapboxsdk.testapp.action.MapboxMapAction;
 import com.mapbox.mapboxsdk.testapp.activity.BaseActivityTest;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import static com.mapbox.mapboxsdk.style.functions.Function.*;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stop.stop;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stops.*;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.*;
 import static com.mapbox.mapboxsdk.testapp.action.MapboxMapAction.invoke;
 import static org.junit.Assert.*;
 import static com.mapbox.mapboxsdk.style.layers.Property.*;
@@ -51,17 +38,14 @@ public class HeatmapLayerTest extends BaseActivityTest {
 
   private void setupLayer() {
     Timber.i("Retrieving layer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
-          Timber.i("Adding layer");
-          layer = new HeatmapLayer("my-layer", "composite");
-          layer.setSourceLayer("composite");
-          mapboxMap.addLayer(layer);
-          // Layer reference is now stale, get new reference
-          layer = mapboxMap.getLayerAs("my-layer");
-        }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
+        Timber.i("Adding layer");
+        layer = new HeatmapLayer("my-layer", "composite");
+        layer.setSourceLayer("composite");
+        mapboxMap.addLayer(layer);
+        // Layer reference is now stale, get new reference
+        layer = mapboxMap.getLayerAs("my-layer");
       }
     });
   }
@@ -71,18 +55,15 @@ public class HeatmapLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("Visibility");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Get initial
-        assertEquals(layer.getVisibility().getValue(), VISIBLE);
+      // Get initial
+      assertEquals(layer.getVisibility().getValue(), VISIBLE);
 
-        // Set
-        layer.setProperties(visibility(NONE));
-        assertEquals(layer.getVisibility().getValue(), NONE);
-      }
+      // Set
+      layer.setProperties(visibility(NONE));
+      assertEquals(layer.getVisibility().getValue(), NONE);
     });
   }
 
@@ -91,19 +72,16 @@ public class HeatmapLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("SourceLayer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Get initial
-        assertEquals(layer.getSourceLayer(), "composite");
-
-        // Set
-        final String sourceLayer = "test";
-        layer.setSourceLayer(sourceLayer);
-        assertEquals(layer.getSourceLayer(), sourceLayer);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Get initial
+      assertEquals(layer.getSourceLayer(), "composite");
+
+      // Set
+      final String sourceLayer = "test";
+      layer.setSourceLayer(sourceLayer);
+      assertEquals(layer.getSourceLayer(), sourceLayer);
     });
   }
 
@@ -112,16 +90,13 @@ public class HeatmapLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("heatmap-radiusTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setHeatmapRadiusTransition(options);
-        assertEquals(layer.getHeatmapRadiusTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setHeatmapRadiusTransition(options);
+      assertEquals(layer.getHeatmapRadiusTransition(), options);
     });
   }
 
@@ -130,380 +105,73 @@ public class HeatmapLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("heatmap-radius");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(heatmapRadius(0.3f));
-        assertEquals((Float) layer.getHeatmapRadius().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testHeatmapRadiusAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("heatmap-radius");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          heatmapRadius(
-            zoom(
-              exponential(
-                stop(2, heatmapRadius(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getHeatmapRadius());
-        assertNotNull(layer.getHeatmapRadius().getFunction());
-        assertEquals(CameraFunction.class, layer.getHeatmapRadius().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getHeatmapRadius().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getHeatmapRadius().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getHeatmapRadius().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(heatmapRadius(0.3f));
+      assertEquals((Float) layer.getHeatmapRadius().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testHeatmapRadiusAsIdentitySourceFunction() {
+  public void testHeatmapRadiusAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("heatmap-radius");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          heatmapRadius(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getHeatmapRadius());
-        assertNotNull(layer.getHeatmapRadius().getFunction());
-        assertEquals(SourceFunction.class, layer.getHeatmapRadius().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getHeatmapRadius().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getHeatmapRadius().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("heatmap-radius-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testHeatmapRadiusAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("heatmap-radius");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          heatmapRadius(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, heatmapRadius(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getHeatmapRadius());
-        assertNotNull(layer.getHeatmapRadius().getFunction());
-        assertEquals(SourceFunction.class, layer.getHeatmapRadius().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getHeatmapRadius().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getHeatmapRadius().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(heatmapRadius(expression));
+      assertEquals(layer.getHeatmapRadius().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testHeatmapRadiusAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("heatmap-radius");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          heatmapRadius(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, heatmapRadius(0.3f))
-              )
-            ).withDefaultValue(heatmapRadius(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getHeatmapRadius());
-        assertNotNull(layer.getHeatmapRadius().getFunction());
-        assertEquals(SourceFunction.class, layer.getHeatmapRadius().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getHeatmapRadius().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getHeatmapRadius().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getHeatmapRadius().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getHeatmapRadius().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getHeatmapRadius().getFunction()).getDefaultValue().getValue());
-      }
-    });
-
-  }
-
-  @Test
-  public void testHeatmapRadiusAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("heatmap-radius");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          heatmapRadius(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, heatmapRadius(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(heatmapRadius(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getHeatmapRadius());
-        assertNotNull(layer.getHeatmapRadius().getFunction());
-        assertEquals(CompositeFunction.class, layer.getHeatmapRadius().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getHeatmapRadius().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getHeatmapRadius().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getHeatmapRadius().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getHeatmapRadius().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testHeatmapWeightAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("heatmap-weight");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(heatmapWeight(0.3f));
-        assertEquals((Float) layer.getHeatmapWeight().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testHeatmapWeightAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("heatmap-weight");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          heatmapWeight(
-            zoom(
-              exponential(
-                stop(2, heatmapWeight(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getHeatmapWeight());
-        assertNotNull(layer.getHeatmapWeight().getFunction());
-        assertEquals(CameraFunction.class, layer.getHeatmapWeight().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getHeatmapWeight().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getHeatmapWeight().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getHeatmapWeight().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(heatmapWeight(0.3f));
+      assertEquals((Float) layer.getHeatmapWeight().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testHeatmapWeightAsIdentitySourceFunction() {
+  public void testHeatmapWeightAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("heatmap-weight");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          heatmapWeight(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getHeatmapWeight());
-        assertNotNull(layer.getHeatmapWeight().getFunction());
-        assertEquals(SourceFunction.class, layer.getHeatmapWeight().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getHeatmapWeight().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getHeatmapWeight().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("heatmap-weight-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testHeatmapWeightAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("heatmap-weight");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          heatmapWeight(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, heatmapWeight(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getHeatmapWeight());
-        assertNotNull(layer.getHeatmapWeight().getFunction());
-        assertEquals(SourceFunction.class, layer.getHeatmapWeight().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getHeatmapWeight().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getHeatmapWeight().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(heatmapWeight(expression));
+      assertEquals(layer.getHeatmapWeight().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testHeatmapWeightAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("heatmap-weight");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          heatmapWeight(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, heatmapWeight(0.3f))
-              )
-            ).withDefaultValue(heatmapWeight(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getHeatmapWeight());
-        assertNotNull(layer.getHeatmapWeight().getFunction());
-        assertEquals(SourceFunction.class, layer.getHeatmapWeight().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getHeatmapWeight().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getHeatmapWeight().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getHeatmapWeight().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getHeatmapWeight().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getHeatmapWeight().getFunction()).getDefaultValue().getValue());
-      }
-    });
-
-  }
-
-  @Test
-  public void testHeatmapWeightAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("heatmap-weight");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          heatmapWeight(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, heatmapWeight(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(heatmapWeight(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getHeatmapWeight());
-        assertNotNull(layer.getHeatmapWeight().getFunction());
-        assertEquals(CompositeFunction.class, layer.getHeatmapWeight().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getHeatmapWeight().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getHeatmapWeight().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getHeatmapWeight().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getHeatmapWeight().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testHeatmapIntensityTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("heatmap-intensityTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setHeatmapIntensityTransition(options);
-        assertEquals(layer.getHeatmapIntensityTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setHeatmapIntensityTransition(options);
+      assertEquals(layer.getHeatmapIntensityTransition(), options);
     });
   }
 
@@ -512,47 +180,12 @@ public class HeatmapLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("heatmap-intensity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(heatmapIntensity(0.3f));
-        assertEquals((Float) layer.getHeatmapIntensity().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testHeatmapIntensityAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("heatmap-intensity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          heatmapIntensity(
-            zoom(
-              exponential(
-                stop(2, heatmapIntensity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getHeatmapIntensity());
-        assertNotNull(layer.getHeatmapIntensity().getFunction());
-        assertEquals(CameraFunction.class, layer.getHeatmapIntensity().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getHeatmapIntensity().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getHeatmapIntensity().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getHeatmapIntensity().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(heatmapIntensity(0.3f));
+      assertEquals((Float) layer.getHeatmapIntensity().getValue(), (Float) 0.3f);
     });
   }
 
@@ -561,16 +194,13 @@ public class HeatmapLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("heatmap-opacityTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setHeatmapOpacityTransition(options);
-        assertEquals(layer.getHeatmapOpacityTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setHeatmapOpacityTransition(options);
+      assertEquals(layer.getHeatmapOpacityTransition(), options);
     });
   }
 
@@ -579,48 +209,12 @@ public class HeatmapLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("heatmap-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(heatmapOpacity(0.3f));
-        assertEquals((Float) layer.getHeatmapOpacity().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testHeatmapOpacityAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("heatmap-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          heatmapOpacity(
-            zoom(
-              exponential(
-                stop(2, heatmapOpacity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getHeatmapOpacity());
-        assertNotNull(layer.getHeatmapOpacity().getFunction());
-        assertEquals(CameraFunction.class, layer.getHeatmapOpacity().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getHeatmapOpacity().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getHeatmapOpacity().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getHeatmapOpacity().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(heatmapOpacity(0.3f));
+      assertEquals((Float) layer.getHeatmapOpacity().getValue(), (Float) 0.3f);
     });
   }
-
-}
+}
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/HillshadeLayerTest.java b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/HillshadeLayerTest.java
index 1cb7b575be..1fdc6d6dab 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/HillshadeLayerTest.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/HillshadeLayerTest.java
@@ -3,31 +3,18 @@
 package com.mapbox.mapboxsdk.testapp.style;
 
 import android.graphics.Color;
-import android.support.test.espresso.UiController;
 import android.support.test.runner.AndroidJUnit4;
 
 import timber.log.Timber;
 
-import com.mapbox.mapboxsdk.maps.MapboxMap;
-import com.mapbox.mapboxsdk.style.functions.CompositeFunction;
-import com.mapbox.mapboxsdk.style.functions.CameraFunction;
-import com.mapbox.mapboxsdk.style.functions.SourceFunction;
-import com.mapbox.mapboxsdk.style.functions.stops.CategoricalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.ExponentialStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IdentityStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IntervalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.Stop;
-import com.mapbox.mapboxsdk.style.functions.stops.Stops;
+import com.mapbox.mapboxsdk.style.expressions.Expression;
 import com.mapbox.mapboxsdk.style.layers.HillshadeLayer;
-import com.mapbox.mapboxsdk.testapp.action.MapboxMapAction;
 import com.mapbox.mapboxsdk.testapp.activity.BaseActivityTest;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import static com.mapbox.mapboxsdk.style.functions.Function.*;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stop.stop;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stops.*;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.*;
 import static com.mapbox.mapboxsdk.testapp.action.MapboxMapAction.invoke;
 import static org.junit.Assert.*;
 import static com.mapbox.mapboxsdk.style.layers.Property.*;
@@ -51,17 +38,14 @@ public class HillshadeLayerTest extends BaseActivityTest {
 
   private void setupLayer() {
     Timber.i("Retrieving layer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
-          Timber.i("Adding layer");
-          layer = new HillshadeLayer("my-layer", "composite");
-          layer.setSourceLayer("composite");
-          mapboxMap.addLayer(layer);
-          // Layer reference is now stale, get new reference
-          layer = mapboxMap.getLayerAs("my-layer");
-        }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
+        Timber.i("Adding layer");
+        layer = new HillshadeLayer("my-layer", "composite");
+        layer.setSourceLayer("composite");
+        mapboxMap.addLayer(layer);
+        // Layer reference is now stale, get new reference
+        layer = mapboxMap.getLayerAs("my-layer");
       }
     });
   }
@@ -71,18 +55,15 @@ public class HillshadeLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("Visibility");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Get initial
-        assertEquals(layer.getVisibility().getValue(), VISIBLE);
+      // Get initial
+      assertEquals(layer.getVisibility().getValue(), VISIBLE);
 
-        // Set
-        layer.setProperties(visibility(NONE));
-        assertEquals(layer.getVisibility().getValue(), NONE);
-      }
+      // Set
+      layer.setProperties(visibility(NONE));
+      assertEquals(layer.getVisibility().getValue(), NONE);
     });
   }
 
@@ -91,47 +72,12 @@ public class HillshadeLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("hillshade-illumination-direction");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(hillshadeIlluminationDirection(0.3f));
-        assertEquals((Float) layer.getHillshadeIlluminationDirection().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testHillshadeIlluminationDirectionAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("hillshade-illumination-direction");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          hillshadeIlluminationDirection(
-            zoom(
-              exponential(
-                stop(2, hillshadeIlluminationDirection(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getHillshadeIlluminationDirection());
-        assertNotNull(layer.getHillshadeIlluminationDirection().getFunction());
-        assertEquals(CameraFunction.class, layer.getHillshadeIlluminationDirection().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getHillshadeIlluminationDirection().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getHillshadeIlluminationDirection().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getHillshadeIlluminationDirection().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(hillshadeIlluminationDirection(0.3f));
+      assertEquals((Float) layer.getHillshadeIlluminationDirection().getValue(), (Float) 0.3f);
     });
   }
 
@@ -140,46 +86,12 @@ public class HillshadeLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("hillshade-illumination-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(hillshadeIlluminationAnchor(HILLSHADE_ILLUMINATION_ANCHOR_MAP));
-        assertEquals((String) layer.getHillshadeIlluminationAnchor().getValue(), (String) HILLSHADE_ILLUMINATION_ANCHOR_MAP);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testHillshadeIlluminationAnchorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("hillshade-illumination-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          hillshadeIlluminationAnchor(
-            zoom(
-              interval(
-                stop(2, hillshadeIlluminationAnchor(HILLSHADE_ILLUMINATION_ANCHOR_MAP))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getHillshadeIlluminationAnchor());
-        assertNotNull(layer.getHillshadeIlluminationAnchor().getFunction());
-        assertEquals(CameraFunction.class, layer.getHillshadeIlluminationAnchor().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getHillshadeIlluminationAnchor().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getHillshadeIlluminationAnchor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(hillshadeIlluminationAnchor(HILLSHADE_ILLUMINATION_ANCHOR_MAP));
+      assertEquals((String) layer.getHillshadeIlluminationAnchor().getValue(), (String) HILLSHADE_ILLUMINATION_ANCHOR_MAP);
     });
   }
 
@@ -188,16 +100,13 @@ public class HillshadeLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("hillshade-exaggerationTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setHillshadeExaggerationTransition(options);
-        assertEquals(layer.getHillshadeExaggerationTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setHillshadeExaggerationTransition(options);
+      assertEquals(layer.getHillshadeExaggerationTransition(), options);
     });
   }
 
@@ -206,47 +115,12 @@ public class HillshadeLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("hillshade-exaggeration");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(hillshadeExaggeration(0.3f));
-        assertEquals((Float) layer.getHillshadeExaggeration().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testHillshadeExaggerationAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("hillshade-exaggeration");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          hillshadeExaggeration(
-            zoom(
-              exponential(
-                stop(2, hillshadeExaggeration(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getHillshadeExaggeration());
-        assertNotNull(layer.getHillshadeExaggeration().getFunction());
-        assertEquals(CameraFunction.class, layer.getHillshadeExaggeration().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getHillshadeExaggeration().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getHillshadeExaggeration().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getHillshadeExaggeration().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(hillshadeExaggeration(0.3f));
+      assertEquals((Float) layer.getHillshadeExaggeration().getValue(), (Float) 0.3f);
     });
   }
 
@@ -255,16 +129,13 @@ public class HillshadeLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("hillshade-shadow-colorTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setHillshadeShadowColorTransition(options);
-        assertEquals(layer.getHillshadeShadowColorTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setHillshadeShadowColorTransition(options);
+      assertEquals(layer.getHillshadeShadowColorTransition(), options);
     });
   }
 
@@ -273,47 +144,12 @@ public class HillshadeLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("hillshade-shadow-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(hillshadeShadowColor("rgba(0, 0, 0, 1)"));
-        assertEquals((String) layer.getHillshadeShadowColor().getValue(), (String) "rgba(0, 0, 0, 1)");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testHillshadeShadowColorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("hillshade-shadow-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          hillshadeShadowColor(
-            zoom(
-              exponential(
-                stop(2, hillshadeShadowColor("rgba(0, 0, 0, 1)"))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getHillshadeShadowColor());
-        assertNotNull(layer.getHillshadeShadowColor().getFunction());
-        assertEquals(CameraFunction.class, layer.getHillshadeShadowColor().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getHillshadeShadowColor().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getHillshadeShadowColor().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getHillshadeShadowColor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(hillshadeShadowColor("rgba(0, 0, 0, 1)"));
+      assertEquals((String) layer.getHillshadeShadowColor().getValue(), (String) "rgba(0, 0, 0, 1)");
     });
   }
 
@@ -322,15 +158,12 @@ public class HillshadeLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("hillshade-shadow-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(hillshadeShadowColor(Color.RED));
-        assertEquals(layer.getHillshadeShadowColorAsInt(), Color.RED);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      layer.setProperties(hillshadeShadowColor(Color.RED));
+      assertEquals(layer.getHillshadeShadowColorAsInt(), Color.RED);
     });
   }
 
@@ -339,16 +172,13 @@ public class HillshadeLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("hillshade-highlight-colorTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setHillshadeHighlightColorTransition(options);
-        assertEquals(layer.getHillshadeHighlightColorTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setHillshadeHighlightColorTransition(options);
+      assertEquals(layer.getHillshadeHighlightColorTransition(), options);
     });
   }
 
@@ -357,47 +187,12 @@ public class HillshadeLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("hillshade-highlight-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(hillshadeHighlightColor("rgba(0, 0, 0, 1)"));
-        assertEquals((String) layer.getHillshadeHighlightColor().getValue(), (String) "rgba(0, 0, 0, 1)");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testHillshadeHighlightColorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("hillshade-highlight-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          hillshadeHighlightColor(
-            zoom(
-              exponential(
-                stop(2, hillshadeHighlightColor("rgba(0, 0, 0, 1)"))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getHillshadeHighlightColor());
-        assertNotNull(layer.getHillshadeHighlightColor().getFunction());
-        assertEquals(CameraFunction.class, layer.getHillshadeHighlightColor().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getHillshadeHighlightColor().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getHillshadeHighlightColor().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getHillshadeHighlightColor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(hillshadeHighlightColor("rgba(0, 0, 0, 1)"));
+      assertEquals((String) layer.getHillshadeHighlightColor().getValue(), (String) "rgba(0, 0, 0, 1)");
     });
   }
 
@@ -406,15 +201,12 @@ public class HillshadeLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("hillshade-highlight-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(hillshadeHighlightColor(Color.RED));
-        assertEquals(layer.getHillshadeHighlightColorAsInt(), Color.RED);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      layer.setProperties(hillshadeHighlightColor(Color.RED));
+      assertEquals(layer.getHillshadeHighlightColorAsInt(), Color.RED);
     });
   }
 
@@ -423,16 +215,13 @@ public class HillshadeLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("hillshade-accent-colorTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setHillshadeAccentColorTransition(options);
-        assertEquals(layer.getHillshadeAccentColorTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setHillshadeAccentColorTransition(options);
+      assertEquals(layer.getHillshadeAccentColorTransition(), options);
     });
   }
 
@@ -441,47 +230,12 @@ public class HillshadeLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("hillshade-accent-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(hillshadeAccentColor("rgba(0, 0, 0, 1)"));
-        assertEquals((String) layer.getHillshadeAccentColor().getValue(), (String) "rgba(0, 0, 0, 1)");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testHillshadeAccentColorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("hillshade-accent-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          hillshadeAccentColor(
-            zoom(
-              exponential(
-                stop(2, hillshadeAccentColor("rgba(0, 0, 0, 1)"))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getHillshadeAccentColor());
-        assertNotNull(layer.getHillshadeAccentColor().getFunction());
-        assertEquals(CameraFunction.class, layer.getHillshadeAccentColor().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getHillshadeAccentColor().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getHillshadeAccentColor().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getHillshadeAccentColor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(hillshadeAccentColor("rgba(0, 0, 0, 1)"));
+      assertEquals((String) layer.getHillshadeAccentColor().getValue(), (String) "rgba(0, 0, 0, 1)");
     });
   }
 
@@ -490,16 +244,12 @@ public class HillshadeLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("hillshade-accent-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(hillshadeAccentColor(Color.RED));
-        assertEquals(layer.getHillshadeAccentColorAsInt(), Color.RED);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      layer.setProperties(hillshadeAccentColor(Color.RED));
+      assertEquals(layer.getHillshadeAccentColorAsInt(), Color.RED);
     });
   }
-
-}
+}
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/LightTest.java b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/LightTest.java
index 88da6e45be..560aa91420 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/LightTest.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/LightTest.java
@@ -6,15 +6,12 @@ import android.support.test.espresso.ViewAction;
 import android.support.test.runner.AndroidJUnit4;
 import android.view.View;
 
-import com.mapbox.mapboxsdk.maps.MapboxMap;
 import com.mapbox.mapboxsdk.style.light.Light;
-import com.mapbox.mapboxsdk.style.functions.Function;
-import com.mapbox.mapboxsdk.style.functions.stops.IdentityStops;
+import com.mapbox.mapboxsdk.style.expressions.Expression;
 import com.mapbox.mapboxsdk.style.layers.FillExtrusionLayer;
 import com.mapbox.mapboxsdk.style.layers.TransitionOptions;
 import com.mapbox.mapboxsdk.style.light.Position;
 import com.mapbox.mapboxsdk.testapp.R;
-import com.mapbox.mapboxsdk.testapp.action.MapboxMapAction;
 import com.mapbox.mapboxsdk.testapp.activity.BaseActivityTest;
 import com.mapbox.mapboxsdk.testapp.activity.style.FillExtrusionStyleTestActivity;
 
@@ -48,14 +45,11 @@ public class LightTest extends BaseActivityTest {
     validateTestSetup();
     setupLight();
     Timber.i("anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(light);
-        // Set and Get
-        light.setAnchor(ANCHOR_MAP);
-        assertEquals("Anchor should match", ANCHOR_MAP, light.getAnchor());
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(light);
+      // Set and Get
+      light.setAnchor(ANCHOR_MAP);
+      assertEquals("Anchor should match", ANCHOR_MAP, light.getAnchor());
     });
   }
 
@@ -64,15 +58,12 @@ public class LightTest extends BaseActivityTest {
     validateTestSetup();
     setupLight();
     Timber.i("positionTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(light);
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        light.setPositionTransition(options);
-        assertEquals("Transition options should match", options, light.getPositionTransition());
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(light);
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      light.setPositionTransition(options);
+      assertEquals("Transition options should match", options, light.getPositionTransition());
     });
   }
 
@@ -81,15 +72,12 @@ public class LightTest extends BaseActivityTest {
     validateTestSetup();
     setupLight();
     Timber.i("position");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(light);
-        // Set and Get
-        Position position = new Position(1, 2, 3);
-        light.setPosition(position);
-        assertEquals("Position should match", position, light.getPosition());
-      }
+    invoke(mapboxMap,(uiController, mapboxMap) -> {
+      assertNotNull(light);
+      // Set and Get
+      Position position = new Position(1, 2, 3);
+      light.setPosition(position);
+      assertEquals("Position should match", position, light.getPosition());
     });
   }
 
@@ -98,15 +86,12 @@ public class LightTest extends BaseActivityTest {
     validateTestSetup();
     setupLight();
     Timber.i("colorTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(light);
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        light.setColorTransition(options);
-        assertEquals("Transition options should match", options, light.getColorTransition());
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(light);
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      light.setColorTransition(options);
+      assertEquals("Transition options should match", options, light.getColorTransition());
     });
   }
 
@@ -115,14 +100,11 @@ public class LightTest extends BaseActivityTest {
     validateTestSetup();
     setupLight();
     Timber.i("color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(light);
-        // Set and Get
-        light.setColor("rgba(0, 0, 0, 1)");
-        assertEquals("Color should match", "rgba(0, 0, 0, 1)".replaceAll("\\s+", ""), light.getColor());
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(light);
+      // Set and Get
+      light.setColor("rgba(0, 0, 0, 1)");
+      assertEquals("Color should match", "rgba(0, 0, 0, 1)".replaceAll("\\s+", ""), light.getColor());
     });
   }
 
@@ -131,15 +113,12 @@ public class LightTest extends BaseActivityTest {
     validateTestSetup();
     setupLight();
     Timber.i("intensityTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(light);
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        light.setIntensityTransition(options);
-        assertEquals("Transition options should match", options, light.getIntensityTransition());
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(light);
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      light.setIntensityTransition(options);
+      assertEquals("Transition options should match", options, light.getIntensityTransition());
     });
   }
 
@@ -148,14 +127,11 @@ public class LightTest extends BaseActivityTest {
     validateTestSetup();
     setupLight();
     Timber.i("intensity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(light);
-        // Set and Get
-        light.setIntensity(0.3f);
-        assertEquals("Intensity should match", 0.3f, light.getIntensity());
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(light);
+      // Set and Get
+      light.setIntensity(0.3f);
+      assertEquals("Intensity should match", 0.3f, light.getIntensity());
     });
   }
 
@@ -180,8 +156,8 @@ public class LightTest extends BaseActivityTest {
         fillExtrusionLayer.setMinZoom(15);
         fillExtrusionLayer.setProperties(
           fillExtrusionColor(Color.LTGRAY),
-          fillExtrusionHeight(Function.property("height", new IdentityStops<Float>())),
-          fillExtrusionBase(Function.property("min_height", new IdentityStops<Float>())),
+          fillExtrusionHeight(Expression.get("height")),
+          fillExtrusionBase(Expression.get("min_height")),
           fillExtrusionOpacity(0.6f)
         );
         mapboxMap.addLayer(fillExtrusionLayer);
@@ -193,4 +169,4 @@ public class LightTest extends BaseActivityTest {
   protected Class getActivityClass() {
     return FillExtrusionStyleTestActivity.class;
   }
-}
+}
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/LineLayerTest.java b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/LineLayerTest.java
index 8123d24be8..a8e306d7a6 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/LineLayerTest.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/LineLayerTest.java
@@ -3,31 +3,18 @@
 package com.mapbox.mapboxsdk.testapp.style;
 
 import android.graphics.Color;
-import android.support.test.espresso.UiController;
 import android.support.test.runner.AndroidJUnit4;
 
 import timber.log.Timber;
 
-import com.mapbox.mapboxsdk.maps.MapboxMap;
-import com.mapbox.mapboxsdk.style.functions.CompositeFunction;
-import com.mapbox.mapboxsdk.style.functions.CameraFunction;
-import com.mapbox.mapboxsdk.style.functions.SourceFunction;
-import com.mapbox.mapboxsdk.style.functions.stops.CategoricalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.ExponentialStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IdentityStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IntervalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.Stop;
-import com.mapbox.mapboxsdk.style.functions.stops.Stops;
+import com.mapbox.mapboxsdk.style.expressions.Expression;
 import com.mapbox.mapboxsdk.style.layers.LineLayer;
-import com.mapbox.mapboxsdk.testapp.action.MapboxMapAction;
 import com.mapbox.mapboxsdk.testapp.activity.BaseActivityTest;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import static com.mapbox.mapboxsdk.style.functions.Function.*;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stop.stop;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stops.*;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.*;
 import static com.mapbox.mapboxsdk.testapp.action.MapboxMapAction.invoke;
 import static org.junit.Assert.*;
 import static com.mapbox.mapboxsdk.style.layers.Property.*;
@@ -51,17 +38,14 @@ public class LineLayerTest extends BaseActivityTest {
 
   private void setupLayer() {
     Timber.i("Retrieving layer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
-          Timber.i("Adding layer");
-          layer = new LineLayer("my-layer", "composite");
-          layer.setSourceLayer("composite");
-          mapboxMap.addLayer(layer);
-          // Layer reference is now stale, get new reference
-          layer = mapboxMap.getLayerAs("my-layer");
-        }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
+        Timber.i("Adding layer");
+        layer = new LineLayer("my-layer", "composite");
+        layer.setSourceLayer("composite");
+        mapboxMap.addLayer(layer);
+        // Layer reference is now stale, get new reference
+        layer = mapboxMap.getLayerAs("my-layer");
       }
     });
   }
@@ -71,18 +55,15 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("Visibility");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Get initial
-        assertEquals(layer.getVisibility().getValue(), VISIBLE);
+      // Get initial
+      assertEquals(layer.getVisibility().getValue(), VISIBLE);
 
-        // Set
-        layer.setProperties(visibility(NONE));
-        assertEquals(layer.getVisibility().getValue(), NONE);
-      }
+      // Set
+      layer.setProperties(visibility(NONE));
+      assertEquals(layer.getVisibility().getValue(), NONE);
     });
   }
 
@@ -91,19 +72,16 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("SourceLayer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Get initial
-        assertEquals(layer.getSourceLayer(), "composite");
-
-        // Set
-        final String sourceLayer = "test";
-        layer.setSourceLayer(sourceLayer);
-        assertEquals(layer.getSourceLayer(), sourceLayer);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Get initial
+      assertEquals(layer.getSourceLayer(), "composite");
+
+      // Set
+      final String sourceLayer = "test";
+      layer.setSourceLayer(sourceLayer);
+      assertEquals(layer.getSourceLayer(), sourceLayer);
     });
   }
 
@@ -112,46 +90,12 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("line-cap");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(lineCap(LINE_CAP_BUTT));
-        assertEquals((String) layer.getLineCap().getValue(), (String) LINE_CAP_BUTT);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineCapAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-cap");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineCap(
-            zoom(
-              interval(
-                stop(2, lineCap(LINE_CAP_BUTT))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineCap());
-        assertNotNull(layer.getLineCap().getFunction());
-        assertEquals(CameraFunction.class, layer.getLineCap().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getLineCap().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getLineCap().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(lineCap(LINE_CAP_BUTT));
+      assertEquals((String) layer.getLineCap().getValue(), (String) LINE_CAP_BUTT);
     });
   }
 
@@ -160,152 +104,42 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("line-join");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(lineJoin(LINE_JOIN_BEVEL));
-        assertEquals((String) layer.getLineJoin().getValue(), (String) LINE_JOIN_BEVEL);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineJoinAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-join");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineJoin(
-            zoom(
-              interval(
-                stop(2, lineJoin(LINE_JOIN_BEVEL))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineJoin());
-        assertNotNull(layer.getLineJoin().getFunction());
-        assertEquals(CameraFunction.class, layer.getLineJoin().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getLineJoin().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getLineJoin().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(lineJoin(LINE_JOIN_BEVEL));
+      assertEquals((String) layer.getLineJoin().getValue(), (String) LINE_JOIN_BEVEL);
     });
   }
 
   @Test
-  public void testLineJoinAsIdentitySourceFunction() {
+  public void testLineJoinAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("line-join");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineJoin(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getLineJoin());
-        assertNotNull(layer.getLineJoin().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineJoin().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineJoin().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getLineJoin().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("line-join-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineJoinAsIntervalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-join");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineJoin(
-            property(
-              "FeaturePropertyA",
-              interval(
-                stop(1, lineJoin(LINE_JOIN_BEVEL))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineJoin());
-        assertNotNull(layer.getLineJoin().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineJoin().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineJoin().getFunction()).getProperty());
-        assertEquals(IntervalStops.class, layer.getLineJoin().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = string(Expression.get("undefined"));
+      layer.setProperties(lineJoin(expression));
+      assertEquals(layer.getLineJoin().getExpression(), expression);
     });
   }
 
+
   @Test
   public void testLineMiterLimitAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("line-miter-limit");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(lineMiterLimit(0.3f));
-        assertEquals((Float) layer.getLineMiterLimit().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineMiterLimitAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-miter-limit");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineMiterLimit(
-            zoom(
-              exponential(
-                stop(2, lineMiterLimit(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineMiterLimit());
-        assertNotNull(layer.getLineMiterLimit().getFunction());
-        assertEquals(CameraFunction.class, layer.getLineMiterLimit().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getLineMiterLimit().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getLineMiterLimit().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getLineMiterLimit().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(lineMiterLimit(0.3f));
+      assertEquals((Float) layer.getLineMiterLimit().getValue(), (Float) 0.3f);
     });
   }
 
@@ -314,47 +148,12 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("line-round-limit");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(lineRoundLimit(0.3f));
-        assertEquals((Float) layer.getLineRoundLimit().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineRoundLimitAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-round-limit");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineRoundLimit(
-            zoom(
-              exponential(
-                stop(2, lineRoundLimit(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineRoundLimit());
-        assertNotNull(layer.getLineRoundLimit().getFunction());
-        assertEquals(CameraFunction.class, layer.getLineRoundLimit().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getLineRoundLimit().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getLineRoundLimit().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getLineRoundLimit().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(lineRoundLimit(0.3f));
+      assertEquals((Float) layer.getLineRoundLimit().getValue(), (Float) 0.3f);
     });
   }
 
@@ -363,16 +162,13 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("line-opacityTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setLineOpacityTransition(options);
-        assertEquals(layer.getLineOpacityTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setLineOpacityTransition(options);
+      assertEquals(layer.getLineOpacityTransition(), options);
     });
   }
 
@@ -381,198 +177,43 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("line-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(lineOpacity(0.3f));
-        assertEquals((Float) layer.getLineOpacity().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineOpacityAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineOpacity(
-            zoom(
-              exponential(
-                stop(2, lineOpacity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineOpacity());
-        assertNotNull(layer.getLineOpacity().getFunction());
-        assertEquals(CameraFunction.class, layer.getLineOpacity().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getLineOpacity().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getLineOpacity().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getLineOpacity().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(lineOpacity(0.3f));
+      assertEquals((Float) layer.getLineOpacity().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testLineOpacityAsIdentitySourceFunction() {
+  public void testLineOpacityAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("line-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineOpacity(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getLineOpacity());
-        assertNotNull(layer.getLineOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineOpacity().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getLineOpacity().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("line-opacity-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineOpacityAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineOpacity(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, lineOpacity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineOpacity());
-        assertNotNull(layer.getLineOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineOpacity().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getLineOpacity().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(lineOpacity(expression));
+      assertEquals(layer.getLineOpacity().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testLineOpacityAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineOpacity(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, lineOpacity(0.3f))
-              )
-            ).withDefaultValue(lineOpacity(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineOpacity());
-        assertNotNull(layer.getLineOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineOpacity().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getLineOpacity().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getLineOpacity().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getLineOpacity().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getLineOpacity().getFunction()).getDefaultValue().getValue());
-      }
-    });
-
-  }
-
-  @Test
-  public void testLineOpacityAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineOpacity(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, lineOpacity(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(lineOpacity(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineOpacity());
-        assertNotNull(layer.getLineOpacity().getFunction());
-        assertEquals(CompositeFunction.class, layer.getLineOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getLineOpacity().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getLineOpacity().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getLineOpacity().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getLineOpacity().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testLineColorTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("line-colorTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setLineColorTransition(options);
-        assertEquals(layer.getLineColorTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setLineColorTransition(options);
+      assertEquals(layer.getLineColorTransition(), options);
     });
   }
 
@@ -581,157 +222,42 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("line-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(lineColor("rgba(0, 0, 0, 1)"));
-        assertEquals((String) layer.getLineColor().getValue(), (String) "rgba(0, 0, 0, 1)");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineColorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineColor(
-            zoom(
-              exponential(
-                stop(2, lineColor("rgba(0, 0, 0, 1)"))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineColor());
-        assertNotNull(layer.getLineColor().getFunction());
-        assertEquals(CameraFunction.class, layer.getLineColor().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getLineColor().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getLineColor().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getLineColor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(lineColor("rgba(0, 0, 0, 1)"));
+      assertEquals((String) layer.getLineColor().getValue(), (String) "rgba(0, 0, 0, 1)");
     });
   }
 
   @Test
-  public void testLineColorAsIdentitySourceFunction() {
+  public void testLineColorAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("line-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineColor(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getLineColor());
-        assertNotNull(layer.getLineColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineColor().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getLineColor().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("line-color-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineColorAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineColor(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(Color.RED, lineColor(Color.RED))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineColor());
-        assertNotNull(layer.getLineColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineColor().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getLineColor().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = toColor(Expression.get("undefined"));
+      layer.setProperties(lineColor(expression));
+      assertEquals(layer.getLineColor().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testLineColorAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineColor(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop("valueA", lineColor(Color.RED))
-              )
-            ).withDefaultValue(lineColor(Color.GREEN))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineColor());
-        assertNotNull(layer.getLineColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineColor().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getLineColor().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getLineColor().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getLineColor().getFunction()).getDefaultValue().getValue());
-        assertEquals(Color.GREEN, (int) ((SourceFunction) layer.getLineColor().getFunction()).getDefaultValue().getColorInt());
-      }
-    });
-
-  }
 
   @Test
   public void testLineColorAsIntConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("line-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(lineColor(Color.RED));
-        assertEquals(layer.getLineColorAsInt(), Color.RED);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      layer.setProperties(lineColor(Color.RED));
+      assertEquals(layer.getLineColorAsInt(), Color.RED);
     });
   }
 
@@ -740,16 +266,13 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("line-translateTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setLineTranslateTransition(options);
-        assertEquals(layer.getLineTranslateTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setLineTranslateTransition(options);
+      assertEquals(layer.getLineTranslateTransition(), options);
     });
   }
 
@@ -758,47 +281,12 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("line-translate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(lineTranslate(new Float[] {0f, 0f}));
-        assertEquals((Float[]) layer.getLineTranslate().getValue(), (Float[]) new Float[] {0f, 0f});
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineTranslateAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-translate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineTranslate(
-            zoom(
-              exponential(
-                stop(2, lineTranslate(new Float[] {0f, 0f}))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineTranslate());
-        assertNotNull(layer.getLineTranslate().getFunction());
-        assertEquals(CameraFunction.class, layer.getLineTranslate().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getLineTranslate().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getLineTranslate().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getLineTranslate().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(lineTranslate(new Float[] {0f, 0f}));
+      assertEquals((Float[]) layer.getLineTranslate().getValue(), (Float[]) new Float[] {0f, 0f});
     });
   }
 
@@ -807,46 +295,12 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("line-translate-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(lineTranslateAnchor(LINE_TRANSLATE_ANCHOR_MAP));
-        assertEquals((String) layer.getLineTranslateAnchor().getValue(), (String) LINE_TRANSLATE_ANCHOR_MAP);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineTranslateAnchorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-translate-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineTranslateAnchor(
-            zoom(
-              interval(
-                stop(2, lineTranslateAnchor(LINE_TRANSLATE_ANCHOR_MAP))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineTranslateAnchor());
-        assertNotNull(layer.getLineTranslateAnchor().getFunction());
-        assertEquals(CameraFunction.class, layer.getLineTranslateAnchor().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getLineTranslateAnchor().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getLineTranslateAnchor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(lineTranslateAnchor(LINE_TRANSLATE_ANCHOR_MAP));
+      assertEquals((String) layer.getLineTranslateAnchor().getValue(), (String) LINE_TRANSLATE_ANCHOR_MAP);
     });
   }
 
@@ -855,16 +309,13 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("line-widthTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setLineWidthTransition(options);
-        assertEquals(layer.getLineWidthTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setLineWidthTransition(options);
+      assertEquals(layer.getLineWidthTransition(), options);
     });
   }
 
@@ -873,580 +324,102 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("line-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(lineWidth(0.3f));
-        assertEquals((Float) layer.getLineWidth().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineWidthAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineWidth(
-            zoom(
-              exponential(
-                stop(2, lineWidth(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineWidth());
-        assertNotNull(layer.getLineWidth().getFunction());
-        assertEquals(CameraFunction.class, layer.getLineWidth().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getLineWidth().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getLineWidth().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getLineWidth().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(lineWidth(0.3f));
+      assertEquals((Float) layer.getLineWidth().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testLineWidthAsIdentitySourceFunction() {
+  public void testLineWidthAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("line-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineWidth(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getLineWidth());
-        assertNotNull(layer.getLineWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineWidth().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getLineWidth().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("line-width-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineWidthAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineWidth(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, lineWidth(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineWidth());
-        assertNotNull(layer.getLineWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineWidth().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getLineWidth().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(lineWidth(expression));
+      assertEquals(layer.getLineWidth().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testLineWidthAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineWidth(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, lineWidth(0.3f))
-              )
-            ).withDefaultValue(lineWidth(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineWidth());
-        assertNotNull(layer.getLineWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineWidth().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getLineWidth().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getLineWidth().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getLineWidth().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getLineWidth().getFunction()).getDefaultValue().getValue());
-      }
-    });
-
-  }
-
-  @Test
-  public void testLineWidthAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineWidth(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, lineWidth(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(lineWidth(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineWidth());
-        assertNotNull(layer.getLineWidth().getFunction());
-        assertEquals(CompositeFunction.class, layer.getLineWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getLineWidth().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getLineWidth().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getLineWidth().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getLineWidth().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testLineGapWidthTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("line-gap-widthTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setLineGapWidthTransition(options);
-        assertEquals(layer.getLineGapWidthTransition(), options);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineGapWidthAsConstant() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-gap-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(lineGapWidth(0.3f));
-        assertEquals((Float) layer.getLineGapWidth().getValue(), (Float) 0.3f);
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setLineGapWidthTransition(options);
+      assertEquals(layer.getLineGapWidthTransition(), options);
     });
   }
 
   @Test
-  public void testLineGapWidthAsCameraFunction() {
+  public void testLineGapWidthAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("line-gap-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineGapWidth(
-            zoom(
-              exponential(
-                stop(2, lineGapWidth(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineGapWidth());
-        assertNotNull(layer.getLineGapWidth().getFunction());
-        assertEquals(CameraFunction.class, layer.getLineGapWidth().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getLineGapWidth().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getLineGapWidth().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getLineGapWidth().getFunction().getStops()).size());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineGapWidthAsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-gap-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineGapWidth(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getLineGapWidth());
-        assertNotNull(layer.getLineGapWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineGapWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineGapWidth().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getLineGapWidth().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(lineGapWidth(0.3f));
+      assertEquals((Float) layer.getLineGapWidth().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testLineGapWidthAsExponentialSourceFunction() {
+  public void testLineGapWidthAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("line-gap-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineGapWidth(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, lineGapWidth(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineGapWidth());
-        assertNotNull(layer.getLineGapWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineGapWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineGapWidth().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getLineGapWidth().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("line-gap-width-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineGapWidthAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-gap-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineGapWidth(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, lineGapWidth(0.3f))
-              )
-            ).withDefaultValue(lineGapWidth(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineGapWidth());
-        assertNotNull(layer.getLineGapWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineGapWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineGapWidth().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getLineGapWidth().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getLineGapWidth().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getLineGapWidth().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getLineGapWidth().getFunction()).getDefaultValue().getValue());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(lineGapWidth(expression));
+      assertEquals(layer.getLineGapWidth().getExpression(), expression);
     });
-
   }
 
-  @Test
-  public void testLineGapWidthAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-gap-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineGapWidth(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, lineGapWidth(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(lineGapWidth(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineGapWidth());
-        assertNotNull(layer.getLineGapWidth().getFunction());
-        assertEquals(CompositeFunction.class, layer.getLineGapWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getLineGapWidth().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getLineGapWidth().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getLineGapWidth().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getLineGapWidth().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testLineOffsetTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("line-offsetTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setLineOffsetTransition(options);
-        assertEquals(layer.getLineOffsetTransition(), options);
-      }
-    });
-  }
-
-  @Test
-  public void testLineOffsetAsConstant() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-offset");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(lineOffset(0.3f));
-        assertEquals((Float) layer.getLineOffset().getValue(), (Float) 0.3f);
-      }
-    });
-  }
-
-  @Test
-  public void testLineOffsetAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-offset");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineOffset(
-            zoom(
-              exponential(
-                stop(2, lineOffset(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineOffset());
-        assertNotNull(layer.getLineOffset().getFunction());
-        assertEquals(CameraFunction.class, layer.getLineOffset().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getLineOffset().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getLineOffset().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getLineOffset().getFunction().getStops()).size());
-      }
-    });
-  }
-
-  @Test
-  public void testLineOffsetAsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-offset");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineOffset(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getLineOffset());
-        assertNotNull(layer.getLineOffset().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineOffset().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineOffset().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getLineOffset().getFunction().getStops().getClass());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineOffsetAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-offset");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineOffset(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, lineOffset(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineOffset());
-        assertNotNull(layer.getLineOffset().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineOffset().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineOffset().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getLineOffset().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setLineOffsetTransition(options);
+      assertEquals(layer.getLineOffsetTransition(), options);
     });
   }
 
   @Test
-  public void testLineOffsetAsCategoricalSourceFunction() {
+  public void testLineOffsetAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("line-offset");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineOffset(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, lineOffset(0.3f))
-              )
-            ).withDefaultValue(lineOffset(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineOffset());
-        assertNotNull(layer.getLineOffset().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineOffset().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineOffset().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getLineOffset().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getLineOffset().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getLineOffset().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getLineOffset().getFunction()).getDefaultValue().getValue());
-      }
-    });
-
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineOffsetAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-offset");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineOffset(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, lineOffset(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(lineOffset(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineOffset());
-        assertNotNull(layer.getLineOffset().getFunction());
-        assertEquals(CompositeFunction.class, layer.getLineOffset().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getLineOffset().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getLineOffset().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getLineOffset().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getLineOffset().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
+      // Set and Get
+      layer.setProperties(lineOffset(0.3f));
+      assertEquals((Float) layer.getLineOffset().getValue(), (Float) 0.3f);
     });
   }
 
@@ -1455,216 +428,58 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("line-blurTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setLineBlurTransition(options);
-        assertEquals(layer.getLineBlurTransition(), options);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineBlurAsConstant() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(lineBlur(0.3f));
-        assertEquals((Float) layer.getLineBlur().getValue(), (Float) 0.3f);
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setLineBlurTransition(options);
+      assertEquals(layer.getLineBlurTransition(), options);
     });
   }
 
   @Test
-  public void testLineBlurAsCameraFunction() {
+  public void testLineBlurAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("line-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineBlur(
-            zoom(
-              exponential(
-                stop(2, lineBlur(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineBlur());
-        assertNotNull(layer.getLineBlur().getFunction());
-        assertEquals(CameraFunction.class, layer.getLineBlur().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getLineBlur().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getLineBlur().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getLineBlur().getFunction().getStops()).size());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineBlurAsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineBlur(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getLineBlur());
-        assertNotNull(layer.getLineBlur().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineBlur().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineBlur().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getLineBlur().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(lineBlur(0.3f));
+      assertEquals((Float) layer.getLineBlur().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testLineBlurAsExponentialSourceFunction() {
+  public void testLineBlurAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("line-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineBlur(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, lineBlur(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineBlur());
-        assertNotNull(layer.getLineBlur().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineBlur().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineBlur().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getLineBlur().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("line-blur-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineBlurAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineBlur(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, lineBlur(0.3f))
-              )
-            ).withDefaultValue(lineBlur(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineBlur());
-        assertNotNull(layer.getLineBlur().getFunction());
-        assertEquals(SourceFunction.class, layer.getLineBlur().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getLineBlur().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getLineBlur().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getLineBlur().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getLineBlur().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getLineBlur().getFunction()).getDefaultValue().getValue());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(lineBlur(expression));
+      assertEquals(layer.getLineBlur().getExpression(), expression);
     });
-
   }
 
-  @Test
-  public void testLineBlurAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineBlur(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, lineBlur(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(lineBlur(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineBlur());
-        assertNotNull(layer.getLineBlur().getFunction());
-        assertEquals(CompositeFunction.class, layer.getLineBlur().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getLineBlur().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getLineBlur().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getLineBlur().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getLineBlur().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testLineDasharrayTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("line-dasharrayTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setLineDasharrayTransition(options);
-        assertEquals(layer.getLineDasharrayTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setLineDasharrayTransition(options);
+      assertEquals(layer.getLineDasharrayTransition(), options);
     });
   }
 
@@ -1673,46 +488,12 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("line-dasharray");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(lineDasharray(new Float[] {}));
-        assertEquals((Float[]) layer.getLineDasharray().getValue(), (Float[]) new Float[] {});
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLineDasharrayAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-dasharray");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          lineDasharray(
-            zoom(
-              interval(
-                stop(2, lineDasharray(new Float[] {}))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLineDasharray());
-        assertNotNull(layer.getLineDasharray().getFunction());
-        assertEquals(CameraFunction.class, layer.getLineDasharray().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getLineDasharray().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getLineDasharray().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(lineDasharray(new Float[] {}));
+      assertEquals((Float[]) layer.getLineDasharray().getValue(), (Float[]) new Float[] {});
     });
   }
 
@@ -1721,16 +502,13 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("line-patternTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setLinePatternTransition(options);
-        assertEquals(layer.getLinePatternTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setLinePatternTransition(options);
+      assertEquals(layer.getLinePatternTransition(), options);
     });
   }
 
@@ -1739,47 +517,12 @@ public class LineLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("line-pattern");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(linePattern("pedestrian-polygon"));
-        assertEquals((String) layer.getLinePattern().getValue(), (String) "pedestrian-polygon");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testLinePatternAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("line-pattern");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          linePattern(
-            zoom(
-              interval(
-                stop(2, linePattern("pedestrian-polygon"))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getLinePattern());
-        assertNotNull(layer.getLinePattern().getFunction());
-        assertEquals(CameraFunction.class, layer.getLinePattern().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getLinePattern().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getLinePattern().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(linePattern("pedestrian-polygon"));
+      assertEquals((String) layer.getLinePattern().getValue(), (String) "pedestrian-polygon");
     });
   }
-
-}
+}
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/RasterLayerTest.java b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/RasterLayerTest.java
index df560e2632..0410d09369 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/RasterLayerTest.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/RasterLayerTest.java
@@ -3,31 +3,18 @@
 package com.mapbox.mapboxsdk.testapp.style;
 
 import android.graphics.Color;
-import android.support.test.espresso.UiController;
 import android.support.test.runner.AndroidJUnit4;
 
 import timber.log.Timber;
 
-import com.mapbox.mapboxsdk.maps.MapboxMap;
-import com.mapbox.mapboxsdk.style.functions.CompositeFunction;
-import com.mapbox.mapboxsdk.style.functions.CameraFunction;
-import com.mapbox.mapboxsdk.style.functions.SourceFunction;
-import com.mapbox.mapboxsdk.style.functions.stops.CategoricalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.ExponentialStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IdentityStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IntervalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.Stop;
-import com.mapbox.mapboxsdk.style.functions.stops.Stops;
+import com.mapbox.mapboxsdk.style.expressions.Expression;
 import com.mapbox.mapboxsdk.style.layers.RasterLayer;
-import com.mapbox.mapboxsdk.testapp.action.MapboxMapAction;
 import com.mapbox.mapboxsdk.testapp.activity.BaseActivityTest;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import static com.mapbox.mapboxsdk.style.functions.Function.*;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stop.stop;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stops.*;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.*;
 import static com.mapbox.mapboxsdk.testapp.action.MapboxMapAction.invoke;
 import static org.junit.Assert.*;
 import static com.mapbox.mapboxsdk.style.layers.Property.*;
@@ -51,17 +38,14 @@ public class RasterLayerTest extends BaseActivityTest {
 
   private void setupLayer() {
     Timber.i("Retrieving layer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
-          Timber.i("Adding layer");
-          layer = new RasterLayer("my-layer", "composite");
-          layer.setSourceLayer("composite");
-          mapboxMap.addLayer(layer);
-          // Layer reference is now stale, get new reference
-          layer = mapboxMap.getLayerAs("my-layer");
-        }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
+        Timber.i("Adding layer");
+        layer = new RasterLayer("my-layer", "composite");
+        layer.setSourceLayer("composite");
+        mapboxMap.addLayer(layer);
+        // Layer reference is now stale, get new reference
+        layer = mapboxMap.getLayerAs("my-layer");
       }
     });
   }
@@ -71,18 +55,15 @@ public class RasterLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("Visibility");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Get initial
-        assertEquals(layer.getVisibility().getValue(), VISIBLE);
+      // Get initial
+      assertEquals(layer.getVisibility().getValue(), VISIBLE);
 
-        // Set
-        layer.setProperties(visibility(NONE));
-        assertEquals(layer.getVisibility().getValue(), NONE);
-      }
+      // Set
+      layer.setProperties(visibility(NONE));
+      assertEquals(layer.getVisibility().getValue(), NONE);
     });
   }
 
@@ -91,16 +72,13 @@ public class RasterLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("raster-opacityTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setRasterOpacityTransition(options);
-        assertEquals(layer.getRasterOpacityTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setRasterOpacityTransition(options);
+      assertEquals(layer.getRasterOpacityTransition(), options);
     });
   }
 
@@ -109,47 +87,12 @@ public class RasterLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("raster-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(rasterOpacity(0.3f));
-        assertEquals((Float) layer.getRasterOpacity().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testRasterOpacityAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("raster-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          rasterOpacity(
-            zoom(
-              exponential(
-                stop(2, rasterOpacity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getRasterOpacity());
-        assertNotNull(layer.getRasterOpacity().getFunction());
-        assertEquals(CameraFunction.class, layer.getRasterOpacity().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getRasterOpacity().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getRasterOpacity().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getRasterOpacity().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(rasterOpacity(0.3f));
+      assertEquals((Float) layer.getRasterOpacity().getValue(), (Float) 0.3f);
     });
   }
 
@@ -158,16 +101,13 @@ public class RasterLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("raster-hue-rotateTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setRasterHueRotateTransition(options);
-        assertEquals(layer.getRasterHueRotateTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setRasterHueRotateTransition(options);
+      assertEquals(layer.getRasterHueRotateTransition(), options);
     });
   }
 
@@ -176,47 +116,12 @@ public class RasterLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("raster-hue-rotate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(rasterHueRotate(0.3f));
-        assertEquals((Float) layer.getRasterHueRotate().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testRasterHueRotateAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("raster-hue-rotate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          rasterHueRotate(
-            zoom(
-              exponential(
-                stop(2, rasterHueRotate(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getRasterHueRotate());
-        assertNotNull(layer.getRasterHueRotate().getFunction());
-        assertEquals(CameraFunction.class, layer.getRasterHueRotate().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getRasterHueRotate().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getRasterHueRotate().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getRasterHueRotate().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(rasterHueRotate(0.3f));
+      assertEquals((Float) layer.getRasterHueRotate().getValue(), (Float) 0.3f);
     });
   }
 
@@ -225,16 +130,13 @@ public class RasterLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("raster-brightness-minTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setRasterBrightnessMinTransition(options);
-        assertEquals(layer.getRasterBrightnessMinTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setRasterBrightnessMinTransition(options);
+      assertEquals(layer.getRasterBrightnessMinTransition(), options);
     });
   }
 
@@ -243,47 +145,12 @@ public class RasterLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("raster-brightness-min");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(rasterBrightnessMin(0.3f));
-        assertEquals((Float) layer.getRasterBrightnessMin().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testRasterBrightnessMinAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("raster-brightness-min");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          rasterBrightnessMin(
-            zoom(
-              exponential(
-                stop(2, rasterBrightnessMin(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getRasterBrightnessMin());
-        assertNotNull(layer.getRasterBrightnessMin().getFunction());
-        assertEquals(CameraFunction.class, layer.getRasterBrightnessMin().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getRasterBrightnessMin().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getRasterBrightnessMin().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getRasterBrightnessMin().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(rasterBrightnessMin(0.3f));
+      assertEquals((Float) layer.getRasterBrightnessMin().getValue(), (Float) 0.3f);
     });
   }
 
@@ -292,16 +159,13 @@ public class RasterLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("raster-brightness-maxTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setRasterBrightnessMaxTransition(options);
-        assertEquals(layer.getRasterBrightnessMaxTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setRasterBrightnessMaxTransition(options);
+      assertEquals(layer.getRasterBrightnessMaxTransition(), options);
     });
   }
 
@@ -310,47 +174,12 @@ public class RasterLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("raster-brightness-max");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(rasterBrightnessMax(0.3f));
-        assertEquals((Float) layer.getRasterBrightnessMax().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testRasterBrightnessMaxAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("raster-brightness-max");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          rasterBrightnessMax(
-            zoom(
-              exponential(
-                stop(2, rasterBrightnessMax(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getRasterBrightnessMax());
-        assertNotNull(layer.getRasterBrightnessMax().getFunction());
-        assertEquals(CameraFunction.class, layer.getRasterBrightnessMax().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getRasterBrightnessMax().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getRasterBrightnessMax().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getRasterBrightnessMax().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(rasterBrightnessMax(0.3f));
+      assertEquals((Float) layer.getRasterBrightnessMax().getValue(), (Float) 0.3f);
     });
   }
 
@@ -359,16 +188,13 @@ public class RasterLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("raster-saturationTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setRasterSaturationTransition(options);
-        assertEquals(layer.getRasterSaturationTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setRasterSaturationTransition(options);
+      assertEquals(layer.getRasterSaturationTransition(), options);
     });
   }
 
@@ -377,47 +203,12 @@ public class RasterLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("raster-saturation");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(rasterSaturation(0.3f));
-        assertEquals((Float) layer.getRasterSaturation().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testRasterSaturationAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("raster-saturation");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          rasterSaturation(
-            zoom(
-              exponential(
-                stop(2, rasterSaturation(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getRasterSaturation());
-        assertNotNull(layer.getRasterSaturation().getFunction());
-        assertEquals(CameraFunction.class, layer.getRasterSaturation().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getRasterSaturation().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getRasterSaturation().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getRasterSaturation().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(rasterSaturation(0.3f));
+      assertEquals((Float) layer.getRasterSaturation().getValue(), (Float) 0.3f);
     });
   }
 
@@ -426,16 +217,13 @@ public class RasterLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("raster-contrastTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setRasterContrastTransition(options);
-        assertEquals(layer.getRasterContrastTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setRasterContrastTransition(options);
+      assertEquals(layer.getRasterContrastTransition(), options);
     });
   }
 
@@ -444,47 +232,12 @@ public class RasterLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("raster-contrast");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(rasterContrast(0.3f));
-        assertEquals((Float) layer.getRasterContrast().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testRasterContrastAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("raster-contrast");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          rasterContrast(
-            zoom(
-              exponential(
-                stop(2, rasterContrast(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getRasterContrast());
-        assertNotNull(layer.getRasterContrast().getFunction());
-        assertEquals(CameraFunction.class, layer.getRasterContrast().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getRasterContrast().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getRasterContrast().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getRasterContrast().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(rasterContrast(0.3f));
+      assertEquals((Float) layer.getRasterContrast().getValue(), (Float) 0.3f);
     });
   }
 
@@ -493,48 +246,12 @@ public class RasterLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("raster-fade-duration");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(rasterFadeDuration(0.3f));
-        assertEquals((Float) layer.getRasterFadeDuration().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testRasterFadeDurationAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("raster-fade-duration");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          rasterFadeDuration(
-            zoom(
-              exponential(
-                stop(2, rasterFadeDuration(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getRasterFadeDuration());
-        assertNotNull(layer.getRasterFadeDuration().getFunction());
-        assertEquals(CameraFunction.class, layer.getRasterFadeDuration().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getRasterFadeDuration().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getRasterFadeDuration().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getRasterFadeDuration().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(rasterFadeDuration(0.3f));
+      assertEquals((Float) layer.getRasterFadeDuration().getValue(), (Float) 0.3f);
     });
   }
-
-}
+}
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/SymbolLayerTest.java b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/SymbolLayerTest.java
index 781307862d..443c3d682a 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/SymbolLayerTest.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/SymbolLayerTest.java
@@ -3,31 +3,18 @@
 package com.mapbox.mapboxsdk.testapp.style;
 
 import android.graphics.Color;
-import android.support.test.espresso.UiController;
 import android.support.test.runner.AndroidJUnit4;
 
 import timber.log.Timber;
 
-import com.mapbox.mapboxsdk.maps.MapboxMap;
-import com.mapbox.mapboxsdk.style.functions.CompositeFunction;
-import com.mapbox.mapboxsdk.style.functions.CameraFunction;
-import com.mapbox.mapboxsdk.style.functions.SourceFunction;
-import com.mapbox.mapboxsdk.style.functions.stops.CategoricalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.ExponentialStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IdentityStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IntervalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.Stop;
-import com.mapbox.mapboxsdk.style.functions.stops.Stops;
+import com.mapbox.mapboxsdk.style.expressions.Expression;
 import com.mapbox.mapboxsdk.style.layers.SymbolLayer;
-import com.mapbox.mapboxsdk.testapp.action.MapboxMapAction;
 import com.mapbox.mapboxsdk.testapp.activity.BaseActivityTest;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import static com.mapbox.mapboxsdk.style.functions.Function.*;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stop.stop;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stops.*;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.*;
 import static com.mapbox.mapboxsdk.testapp.action.MapboxMapAction.invoke;
 import static org.junit.Assert.*;
 import static com.mapbox.mapboxsdk.style.layers.Property.*;
@@ -51,17 +38,14 @@ public class SymbolLayerTest extends BaseActivityTest {
 
   private void setupLayer() {
     Timber.i("Retrieving layer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
-          Timber.i("Adding layer");
-          layer = new SymbolLayer("my-layer", "composite");
-          layer.setSourceLayer("composite");
-          mapboxMap.addLayer(layer);
-          // Layer reference is now stale, get new reference
-          layer = mapboxMap.getLayerAs("my-layer");
-        }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
+        Timber.i("Adding layer");
+        layer = new SymbolLayer("my-layer", "composite");
+        layer.setSourceLayer("composite");
+        mapboxMap.addLayer(layer);
+        // Layer reference is now stale, get new reference
+        layer = mapboxMap.getLayerAs("my-layer");
       }
     });
   }
@@ -71,18 +55,15 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("Visibility");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Get initial
-        assertEquals(layer.getVisibility().getValue(), VISIBLE);
+      // Get initial
+      assertEquals(layer.getVisibility().getValue(), VISIBLE);
 
-        // Set
-        layer.setProperties(visibility(NONE));
-        assertEquals(layer.getVisibility().getValue(), NONE);
-      }
+      // Set
+      layer.setProperties(visibility(NONE));
+      assertEquals(layer.getVisibility().getValue(), NONE);
     });
   }
 
@@ -91,19 +72,16 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("SourceLayer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Get initial
-        assertEquals(layer.getSourceLayer(), "composite");
-
-        // Set
-        final String sourceLayer = "test";
-        layer.setSourceLayer(sourceLayer);
-        assertEquals(layer.getSourceLayer(), sourceLayer);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Get initial
+      assertEquals(layer.getSourceLayer(), "composite");
+
+      // Set
+      final String sourceLayer = "test";
+      layer.setSourceLayer(sourceLayer);
+      assertEquals(layer.getSourceLayer(), sourceLayer);
     });
   }
 
@@ -112,46 +90,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("symbol-placement");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(symbolPlacement(SYMBOL_PLACEMENT_POINT));
-        assertEquals((String) layer.getSymbolPlacement().getValue(), (String) SYMBOL_PLACEMENT_POINT);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testSymbolPlacementAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("symbol-placement");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          symbolPlacement(
-            zoom(
-              interval(
-                stop(2, symbolPlacement(SYMBOL_PLACEMENT_POINT))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getSymbolPlacement());
-        assertNotNull(layer.getSymbolPlacement().getFunction());
-        assertEquals(CameraFunction.class, layer.getSymbolPlacement().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getSymbolPlacement().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getSymbolPlacement().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(symbolPlacement(SYMBOL_PLACEMENT_POINT));
+      assertEquals((String) layer.getSymbolPlacement().getValue(), (String) SYMBOL_PLACEMENT_POINT);
     });
   }
 
@@ -160,47 +104,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("symbol-spacing");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(symbolSpacing(0.3f));
-        assertEquals((Float) layer.getSymbolSpacing().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testSymbolSpacingAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("symbol-spacing");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          symbolSpacing(
-            zoom(
-              exponential(
-                stop(2, symbolSpacing(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getSymbolSpacing());
-        assertNotNull(layer.getSymbolSpacing().getFunction());
-        assertEquals(CameraFunction.class, layer.getSymbolSpacing().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getSymbolSpacing().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getSymbolSpacing().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getSymbolSpacing().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(symbolSpacing(0.3f));
+      assertEquals((Float) layer.getSymbolSpacing().getValue(), (Float) 0.3f);
     });
   }
 
@@ -209,46 +118,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("symbol-avoid-edges");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(symbolAvoidEdges(true));
-        assertEquals((Boolean) layer.getSymbolAvoidEdges().getValue(), (Boolean) true);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testSymbolAvoidEdgesAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("symbol-avoid-edges");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          symbolAvoidEdges(
-            zoom(
-              interval(
-                stop(2, symbolAvoidEdges(true))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getSymbolAvoidEdges());
-        assertNotNull(layer.getSymbolAvoidEdges().getFunction());
-        assertEquals(CameraFunction.class, layer.getSymbolAvoidEdges().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getSymbolAvoidEdges().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getSymbolAvoidEdges().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(symbolAvoidEdges(true));
+      assertEquals((Boolean) layer.getSymbolAvoidEdges().getValue(), (Boolean) true);
     });
   }
 
@@ -257,46 +132,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-allow-overlap");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconAllowOverlap(true));
-        assertEquals((Boolean) layer.getIconAllowOverlap().getValue(), (Boolean) true);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconAllowOverlapAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-allow-overlap");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconAllowOverlap(
-            zoom(
-              interval(
-                stop(2, iconAllowOverlap(true))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconAllowOverlap());
-        assertNotNull(layer.getIconAllowOverlap().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconAllowOverlap().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getIconAllowOverlap().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getIconAllowOverlap().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconAllowOverlap(true));
+      assertEquals((Boolean) layer.getIconAllowOverlap().getValue(), (Boolean) true);
     });
   }
 
@@ -305,46 +146,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-ignore-placement");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconIgnorePlacement(true));
-        assertEquals((Boolean) layer.getIconIgnorePlacement().getValue(), (Boolean) true);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconIgnorePlacementAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-ignore-placement");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconIgnorePlacement(
-            zoom(
-              interval(
-                stop(2, iconIgnorePlacement(true))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconIgnorePlacement());
-        assertNotNull(layer.getIconIgnorePlacement().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconIgnorePlacement().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getIconIgnorePlacement().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getIconIgnorePlacement().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconIgnorePlacement(true));
+      assertEquals((Boolean) layer.getIconIgnorePlacement().getValue(), (Boolean) true);
     });
   }
 
@@ -353,46 +160,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-optional");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconOptional(true));
-        assertEquals((Boolean) layer.getIconOptional().getValue(), (Boolean) true);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconOptionalAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-optional");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconOptional(
-            zoom(
-              interval(
-                stop(2, iconOptional(true))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconOptional());
-        assertNotNull(layer.getIconOptional().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconOptional().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getIconOptional().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getIconOptional().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconOptional(true));
+      assertEquals((Boolean) layer.getIconOptional().getValue(), (Boolean) true);
     });
   }
 
@@ -401,46 +174,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-rotation-alignment");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconRotationAlignment(ICON_ROTATION_ALIGNMENT_MAP));
-        assertEquals((String) layer.getIconRotationAlignment().getValue(), (String) ICON_ROTATION_ALIGNMENT_MAP);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconRotationAlignmentAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-rotation-alignment");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconRotationAlignment(
-            zoom(
-              interval(
-                stop(2, iconRotationAlignment(ICON_ROTATION_ALIGNMENT_MAP))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconRotationAlignment());
-        assertNotNull(layer.getIconRotationAlignment().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconRotationAlignment().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getIconRotationAlignment().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getIconRotationAlignment().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconRotationAlignment(ICON_ROTATION_ALIGNMENT_MAP));
+      assertEquals((String) layer.getIconRotationAlignment().getValue(), (String) ICON_ROTATION_ALIGNMENT_MAP);
     });
   }
 
@@ -449,228 +188,42 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-size");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconSize(0.3f));
-        assertEquals((Float) layer.getIconSize().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconSizeAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-size");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconSize(
-            zoom(
-              exponential(
-                stop(2, iconSize(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconSize());
-        assertNotNull(layer.getIconSize().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconSize().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getIconSize().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getIconSize().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getIconSize().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconSize(0.3f));
+      assertEquals((Float) layer.getIconSize().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testIconSizeAsIdentitySourceFunction() {
+  public void testIconSizeAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("icon-size");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconSize(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getIconSize());
-        assertNotNull(layer.getIconSize().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconSize().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconSize().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getIconSize().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("icon-size-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconSizeAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-size");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconSize(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, iconSize(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconSize());
-        assertNotNull(layer.getIconSize().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconSize().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconSize().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getIconSize().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(iconSize(expression));
+      assertEquals(layer.getIconSize().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testIconSizeAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-size");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconSize(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, iconSize(0.3f))
-              )
-            ).withDefaultValue(iconSize(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconSize());
-        assertNotNull(layer.getIconSize().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconSize().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconSize().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getIconSize().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getIconSize().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getIconSize().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getIconSize().getFunction()).getDefaultValue().getValue());
-      }
-    });
-
-  }
-
-  @Test
-  public void testIconSizeAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-size");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconSize(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, iconSize(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(iconSize(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconSize());
-        assertNotNull(layer.getIconSize().getFunction());
-        assertEquals(CompositeFunction.class, layer.getIconSize().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getIconSize().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getIconSize().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getIconSize().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getIconSize().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testIconTextFitAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-text-fit");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconTextFit(ICON_TEXT_FIT_NONE));
-        assertEquals((String) layer.getIconTextFit().getValue(), (String) ICON_TEXT_FIT_NONE);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconTextFitAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-text-fit");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconTextFit(
-            zoom(
-              interval(
-                stop(2, iconTextFit(ICON_TEXT_FIT_NONE))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconTextFit());
-        assertNotNull(layer.getIconTextFit().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconTextFit().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getIconTextFit().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getIconTextFit().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconTextFit(ICON_TEXT_FIT_NONE));
+      assertEquals((String) layer.getIconTextFit().getValue(), (String) ICON_TEXT_FIT_NONE);
     });
   }
 
@@ -679,47 +232,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-text-fit-padding");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconTextFitPadding(new Float[] {0f, 0f, 0f, 0f}));
-        assertEquals((Float[]) layer.getIconTextFitPadding().getValue(), (Float[]) new Float[] {0f, 0f, 0f, 0f});
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconTextFitPaddingAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-text-fit-padding");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconTextFitPadding(
-            zoom(
-              exponential(
-                stop(2, iconTextFitPadding(new Float[] {0f, 0f, 0f, 0f}))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconTextFitPadding());
-        assertNotNull(layer.getIconTextFitPadding().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconTextFitPadding().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getIconTextFitPadding().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getIconTextFitPadding().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getIconTextFitPadding().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconTextFitPadding(new Float[] {0f, 0f, 0f, 0f}));
+      assertEquals((Float[]) layer.getIconTextFitPadding().getValue(), (Float[]) new Float[] {0f, 0f, 0f, 0f});
     });
   }
 
@@ -728,334 +246,72 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-image");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconImage("undefined"));
-        assertEquals((String) layer.getIconImage().getValue(), (String) "undefined");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconImageAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-image");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconImage(
-            zoom(
-              interval(
-                stop(2, iconImage("undefined"))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconImage());
-        assertNotNull(layer.getIconImage().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconImage().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getIconImage().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getIconImage().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconImage("undefined"));
+      assertEquals((String) layer.getIconImage().getValue(), (String) "undefined");
     });
   }
 
   @Test
-  public void testIconImageAsIdentitySourceFunction() {
+  public void testIconImageAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("icon-image");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconImage(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getIconImage());
-        assertNotNull(layer.getIconImage().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconImage().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconImage().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getIconImage().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("icon-image-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconImageAsIntervalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-image");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconImage(
-            property(
-              "FeaturePropertyA",
-              interval(
-                stop(1, iconImage("undefined"))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconImage());
-        assertNotNull(layer.getIconImage().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconImage().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconImage().getFunction()).getProperty());
-        assertEquals(IntervalStops.class, layer.getIconImage().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = string(Expression.get("undefined"));
+      layer.setProperties(iconImage(expression));
+      assertEquals(layer.getIconImage().getExpression(), expression);
     });
   }
 
+
   @Test
   public void testIconRotateAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-rotate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconRotate(0.3f));
-        assertEquals((Float) layer.getIconRotate().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconRotateAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-rotate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconRotate(
-            zoom(
-              exponential(
-                stop(2, iconRotate(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconRotate());
-        assertNotNull(layer.getIconRotate().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconRotate().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getIconRotate().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getIconRotate().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getIconRotate().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconRotate(0.3f));
+      assertEquals((Float) layer.getIconRotate().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testIconRotateAsIdentitySourceFunction() {
+  public void testIconRotateAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("icon-rotate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconRotate(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getIconRotate());
-        assertNotNull(layer.getIconRotate().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconRotate().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconRotate().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getIconRotate().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("icon-rotate-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconRotateAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-rotate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconRotate(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, iconRotate(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconRotate());
-        assertNotNull(layer.getIconRotate().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconRotate().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconRotate().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getIconRotate().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(iconRotate(expression));
+      assertEquals(layer.getIconRotate().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testIconRotateAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-rotate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconRotate(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, iconRotate(0.3f))
-              )
-            ).withDefaultValue(iconRotate(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconRotate());
-        assertNotNull(layer.getIconRotate().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconRotate().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconRotate().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getIconRotate().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getIconRotate().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getIconRotate().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getIconRotate().getFunction()).getDefaultValue().getValue());
-      }
-    });
-
-  }
-
-  @Test
-  public void testIconRotateAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-rotate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconRotate(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, iconRotate(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(iconRotate(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconRotate());
-        assertNotNull(layer.getIconRotate().getFunction());
-        assertEquals(CompositeFunction.class, layer.getIconRotate().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getIconRotate().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getIconRotate().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getIconRotate().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getIconRotate().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testIconPaddingAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-padding");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconPadding(0.3f));
-        assertEquals((Float) layer.getIconPadding().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconPaddingAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-padding");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconPadding(
-            zoom(
-              exponential(
-                stop(2, iconPadding(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconPadding());
-        assertNotNull(layer.getIconPadding().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconPadding().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getIconPadding().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getIconPadding().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getIconPadding().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconPadding(0.3f));
+      assertEquals((Float) layer.getIconPadding().getValue(), (Float) 0.3f);
     });
   }
 
@@ -1064,46 +320,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-keep-upright");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconKeepUpright(true));
-        assertEquals((Boolean) layer.getIconKeepUpright().getValue(), (Boolean) true);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconKeepUprightAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-keep-upright");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconKeepUpright(
-            zoom(
-              interval(
-                stop(2, iconKeepUpright(true))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconKeepUpright());
-        assertNotNull(layer.getIconKeepUpright().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconKeepUpright().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getIconKeepUpright().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getIconKeepUpright().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconKeepUpright(true));
+      assertEquals((Boolean) layer.getIconKeepUpright().getValue(), (Boolean) true);
     });
   }
 
@@ -1112,104 +334,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-offset");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconOffset(new Float[] {0f, 0f}));
-        assertEquals((Float[]) layer.getIconOffset().getValue(), (Float[]) new Float[] {0f, 0f});
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconOffsetAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-offset");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconOffset(
-            zoom(
-              exponential(
-                stop(2, iconOffset(new Float[] {0f, 0f}))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconOffset());
-        assertNotNull(layer.getIconOffset().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconOffset().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getIconOffset().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getIconOffset().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getIconOffset().getFunction().getStops()).size());
-      }
-    });
-  }
-
-  @Test
-  public void testIconOffsetAsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-offset");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconOffset(property("FeaturePropertyA", Stops.<Float[]>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getIconOffset());
-        assertNotNull(layer.getIconOffset().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconOffset().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconOffset().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getIconOffset().getFunction().getStops().getClass());
-      }
-    });
-  }
-
-  @Test
-  public void testIconOffsetAsIntervalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-offset");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconOffset(
-            property(
-              "FeaturePropertyA",
-              interval(
-                stop(1, iconOffset(new Float[] {0f, 0f}))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconOffset());
-        assertNotNull(layer.getIconOffset().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconOffset().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconOffset().getFunction()).getProperty());
-        assertEquals(IntervalStops.class, layer.getIconOffset().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(iconOffset(new Float[] {0f, 0f}));
+      assertEquals((Float[]) layer.getIconOffset().getValue(), (Float[]) new Float[] {0f, 0f});
     });
   }
 
@@ -1218,151 +348,42 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconAnchor(ICON_ANCHOR_CENTER));
-        assertEquals((String) layer.getIconAnchor().getValue(), (String) ICON_ANCHOR_CENTER);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconAnchorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconAnchor(
-            zoom(
-              interval(
-                stop(2, iconAnchor(ICON_ANCHOR_CENTER))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconAnchor());
-        assertNotNull(layer.getIconAnchor().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconAnchor().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getIconAnchor().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getIconAnchor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconAnchor(ICON_ANCHOR_CENTER));
+      assertEquals((String) layer.getIconAnchor().getValue(), (String) ICON_ANCHOR_CENTER);
     });
   }
 
   @Test
-  public void testIconAnchorAsIdentitySourceFunction() {
+  public void testIconAnchorAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("icon-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconAnchor(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getIconAnchor());
-        assertNotNull(layer.getIconAnchor().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconAnchor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconAnchor().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getIconAnchor().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("icon-anchor-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconAnchorAsIntervalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconAnchor(
-            property(
-              "FeaturePropertyA",
-              interval(
-                stop(1, iconAnchor(ICON_ANCHOR_CENTER))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconAnchor());
-        assertNotNull(layer.getIconAnchor().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconAnchor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconAnchor().getFunction()).getProperty());
-        assertEquals(IntervalStops.class, layer.getIconAnchor().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = string(Expression.get("undefined"));
+      layer.setProperties(iconAnchor(expression));
+      assertEquals(layer.getIconAnchor().getExpression(), expression);
     });
   }
 
+
   @Test
   public void testIconPitchAlignmentAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-pitch-alignment");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconPitchAlignment(ICON_PITCH_ALIGNMENT_MAP));
-        assertEquals((String) layer.getIconPitchAlignment().getValue(), (String) ICON_PITCH_ALIGNMENT_MAP);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconPitchAlignmentAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-pitch-alignment");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconPitchAlignment(
-            zoom(
-              interval(
-                stop(2, iconPitchAlignment(ICON_PITCH_ALIGNMENT_MAP))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconPitchAlignment());
-        assertNotNull(layer.getIconPitchAlignment().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconPitchAlignment().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getIconPitchAlignment().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getIconPitchAlignment().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconPitchAlignment(ICON_PITCH_ALIGNMENT_MAP));
+      assertEquals((String) layer.getIconPitchAlignment().getValue(), (String) ICON_PITCH_ALIGNMENT_MAP);
     });
   }
 
@@ -1371,46 +392,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-pitch-alignment");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textPitchAlignment(TEXT_PITCH_ALIGNMENT_MAP));
-        assertEquals((String) layer.getTextPitchAlignment().getValue(), (String) TEXT_PITCH_ALIGNMENT_MAP);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextPitchAlignmentAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-pitch-alignment");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textPitchAlignment(
-            zoom(
-              interval(
-                stop(2, textPitchAlignment(TEXT_PITCH_ALIGNMENT_MAP))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextPitchAlignment());
-        assertNotNull(layer.getTextPitchAlignment().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextPitchAlignment().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getTextPitchAlignment().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getTextPitchAlignment().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textPitchAlignment(TEXT_PITCH_ALIGNMENT_MAP));
+      assertEquals((String) layer.getTextPitchAlignment().getValue(), (String) TEXT_PITCH_ALIGNMENT_MAP);
     });
   }
 
@@ -1419,46 +406,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-rotation-alignment");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textRotationAlignment(TEXT_ROTATION_ALIGNMENT_MAP));
-        assertEquals((String) layer.getTextRotationAlignment().getValue(), (String) TEXT_ROTATION_ALIGNMENT_MAP);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextRotationAlignmentAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-rotation-alignment");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textRotationAlignment(
-            zoom(
-              interval(
-                stop(2, textRotationAlignment(TEXT_ROTATION_ALIGNMENT_MAP))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextRotationAlignment());
-        assertNotNull(layer.getTextRotationAlignment().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextRotationAlignment().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getTextRotationAlignment().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getTextRotationAlignment().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textRotationAlignment(TEXT_ROTATION_ALIGNMENT_MAP));
+      assertEquals((String) layer.getTextRotationAlignment().getValue(), (String) TEXT_ROTATION_ALIGNMENT_MAP);
     });
   }
 
@@ -1467,208 +420,42 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-field");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textField(""));
-        assertEquals((String) layer.getTextField().getValue(), (String) "");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextFieldAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-field");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textField(
-            zoom(
-              interval(
-                stop(2, textField(""))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextField());
-        assertNotNull(layer.getTextField().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextField().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getTextField().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getTextField().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textField(""));
+      assertEquals((String) layer.getTextField().getValue(), (String) "");
     });
   }
 
   @Test
-  public void testTextFieldAsIdentitySourceFunction() {
+  public void testTextFieldAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("text-field");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textField(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getTextField());
-        assertNotNull(layer.getTextField().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextField().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextField().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getTextField().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("text-field-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextFieldAsIntervalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-field");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textField(
-            property(
-              "FeaturePropertyA",
-              interval(
-                stop(1, textField(""))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextField());
-        assertNotNull(layer.getTextField().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextField().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextField().getFunction()).getProperty());
-        assertEquals(IntervalStops.class, layer.getTextField().getFunction().getStops().getClass());
-      }
-    });
-  }
-
-  @Test
-  public void testTextFontAsConstant() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-font");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textFont(new String[]{"Open Sans Regular", "Arial Unicode MS Regular"}));
-        assertEquals((String[]) layer.getTextFont().getValue(), (String[]) new String[]{"Open Sans Regular", "Arial Unicode MS Regular"});
-      }
+      // Set and Get
+      Expression expression = string(Expression.get("undefined"));
+      layer.setProperties(textField(expression));
+      assertEquals(layer.getTextField().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testTextFontAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-font");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textFont(
-            zoom(
-              interval(
-                stop(2, textFont(new String[]{"Open Sans Regular", "Arial Unicode MS Regular"}))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextFont());
-        assertNotNull(layer.getTextFont().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextFont().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getTextFont().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getTextFont().getFunction().getStops()).size());
-      }
-    });
-  }
 
   @Test
-  public void testTextFontAsIdentitySourceFunction() {
+  public void testTextFontAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("text-font");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textFont(property("FeaturePropertyA", Stops.<String[]>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getTextFont());
-        assertNotNull(layer.getTextFont().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextFont().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextFont().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getTextFont().getFunction().getStops().getClass());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextFontAsIntervalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-font");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textFont(
-            property(
-              "FeaturePropertyA",
-              interval(
-                stop(1, textFont(new String[]{"Open Sans Regular", "Arial Unicode MS Regular"}))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextFont());
-        assertNotNull(layer.getTextFont().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextFont().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextFont().getFunction()).getProperty());
-        assertEquals(IntervalStops.class, layer.getTextFont().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(textFont(new String[]{"Open Sans Regular", "Arial Unicode MS Regular"}));
+      assertEquals((String[]) layer.getTextFont().getValue(), (String[]) new String[]{"Open Sans Regular", "Arial Unicode MS Regular"});
     });
   }
 
@@ -1677,411 +464,72 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-size");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textSize(0.3f));
-        assertEquals((Float) layer.getTextSize().getValue(), (Float) 0.3f);
-      }
-    });
-  }
-
-  @Test
-  public void testTextSizeAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-size");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textSize(
-            zoom(
-              exponential(
-                stop(2, textSize(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextSize());
-        assertNotNull(layer.getTextSize().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextSize().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getTextSize().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getTextSize().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getTextSize().getFunction().getStops()).size());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextSizeAsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-size");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textSize(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getTextSize());
-        assertNotNull(layer.getTextSize().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextSize().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextSize().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getTextSize().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(textSize(0.3f));
+      assertEquals((Float) layer.getTextSize().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testTextSizeAsExponentialSourceFunction() {
+  public void testTextSizeAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("text-size");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textSize(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, textSize(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextSize());
-        assertNotNull(layer.getTextSize().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextSize().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextSize().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getTextSize().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("text-size-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextSizeAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-size");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textSize(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, textSize(0.3f))
-              )
-            ).withDefaultValue(textSize(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextSize());
-        assertNotNull(layer.getTextSize().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextSize().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextSize().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getTextSize().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getTextSize().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getTextSize().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getTextSize().getFunction()).getDefaultValue().getValue());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(textSize(expression));
+      assertEquals(layer.getTextSize().getExpression(), expression);
     });
-
   }
 
-  @Test
-  public void testTextSizeAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-size");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textSize(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, textSize(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(textSize(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextSize());
-        assertNotNull(layer.getTextSize().getFunction());
-        assertEquals(CompositeFunction.class, layer.getTextSize().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getTextSize().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getTextSize().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getTextSize().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getTextSize().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testTextMaxWidthAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("text-max-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textMaxWidth(0.3f));
-        assertEquals((Float) layer.getTextMaxWidth().getValue(), (Float) 0.3f);
-      }
-    });
-  }
-
-  @Test
-  public void testTextMaxWidthAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-max-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textMaxWidth(
-            zoom(
-              exponential(
-                stop(2, textMaxWidth(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextMaxWidth());
-        assertNotNull(layer.getTextMaxWidth().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextMaxWidth().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getTextMaxWidth().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getTextMaxWidth().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getTextMaxWidth().getFunction().getStops()).size());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextMaxWidthAsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-max-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textMaxWidth(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getTextMaxWidth());
-        assertNotNull(layer.getTextMaxWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextMaxWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextMaxWidth().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getTextMaxWidth().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(textMaxWidth(0.3f));
+      assertEquals((Float) layer.getTextMaxWidth().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testTextMaxWidthAsExponentialSourceFunction() {
+  public void testTextMaxWidthAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("text-max-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textMaxWidth(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, textMaxWidth(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextMaxWidth());
-        assertNotNull(layer.getTextMaxWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextMaxWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextMaxWidth().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getTextMaxWidth().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("text-max-width-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextMaxWidthAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-max-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textMaxWidth(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, textMaxWidth(0.3f))
-              )
-            ).withDefaultValue(textMaxWidth(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextMaxWidth());
-        assertNotNull(layer.getTextMaxWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextMaxWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextMaxWidth().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getTextMaxWidth().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getTextMaxWidth().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getTextMaxWidth().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getTextMaxWidth().getFunction()).getDefaultValue().getValue());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(textMaxWidth(expression));
+      assertEquals(layer.getTextMaxWidth().getExpression(), expression);
     });
-
   }
 
-  @Test
-  public void testTextMaxWidthAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-max-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textMaxWidth(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, textMaxWidth(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(textMaxWidth(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextMaxWidth());
-        assertNotNull(layer.getTextMaxWidth().getFunction());
-        assertEquals(CompositeFunction.class, layer.getTextMaxWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getTextMaxWidth().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getTextMaxWidth().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getTextMaxWidth().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getTextMaxWidth().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testTextLineHeightAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("text-line-height");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textLineHeight(0.3f));
-        assertEquals((Float) layer.getTextLineHeight().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextLineHeightAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-line-height");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textLineHeight(
-            zoom(
-              exponential(
-                stop(2, textLineHeight(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextLineHeight());
-        assertNotNull(layer.getTextLineHeight().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextLineHeight().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getTextLineHeight().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getTextLineHeight().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getTextLineHeight().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textLineHeight(0.3f));
+      assertEquals((Float) layer.getTextLineHeight().getValue(), (Float) 0.3f);
     });
   }
 
@@ -2090,439 +538,102 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-letter-spacing");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textLetterSpacing(0.3f));
-        assertEquals((Float) layer.getTextLetterSpacing().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextLetterSpacingAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-letter-spacing");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textLetterSpacing(
-            zoom(
-              exponential(
-                stop(2, textLetterSpacing(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextLetterSpacing());
-        assertNotNull(layer.getTextLetterSpacing().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextLetterSpacing().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getTextLetterSpacing().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getTextLetterSpacing().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getTextLetterSpacing().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textLetterSpacing(0.3f));
+      assertEquals((Float) layer.getTextLetterSpacing().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testTextLetterSpacingAsIdentitySourceFunction() {
+  public void testTextLetterSpacingAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("text-letter-spacing");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textLetterSpacing(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getTextLetterSpacing());
-        assertNotNull(layer.getTextLetterSpacing().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextLetterSpacing().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextLetterSpacing().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getTextLetterSpacing().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("text-letter-spacing-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextLetterSpacingAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-letter-spacing");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textLetterSpacing(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, textLetterSpacing(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextLetterSpacing());
-        assertNotNull(layer.getTextLetterSpacing().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextLetterSpacing().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextLetterSpacing().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getTextLetterSpacing().getFunction().getStops().getClass());
-      }
-    });
-  }
-
-  @Test
-  public void testTextLetterSpacingAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-letter-spacing");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textLetterSpacing(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, textLetterSpacing(0.3f))
-              )
-            ).withDefaultValue(textLetterSpacing(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextLetterSpacing());
-        assertNotNull(layer.getTextLetterSpacing().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextLetterSpacing().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextLetterSpacing().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getTextLetterSpacing().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getTextLetterSpacing().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getTextLetterSpacing().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getTextLetterSpacing().getFunction()).getDefaultValue().getValue());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(textLetterSpacing(expression));
+      assertEquals(layer.getTextLetterSpacing().getExpression(), expression);
     });
-
   }
 
-  @Test
-  public void testTextLetterSpacingAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-letter-spacing");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textLetterSpacing(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, textLetterSpacing(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(textLetterSpacing(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextLetterSpacing());
-        assertNotNull(layer.getTextLetterSpacing().getFunction());
-        assertEquals(CompositeFunction.class, layer.getTextLetterSpacing().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getTextLetterSpacing().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getTextLetterSpacing().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getTextLetterSpacing().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getTextLetterSpacing().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testTextJustifyAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("text-justify");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textJustify(TEXT_JUSTIFY_LEFT));
-        assertEquals((String) layer.getTextJustify().getValue(), (String) TEXT_JUSTIFY_LEFT);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextJustifyAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-justify");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textJustify(
-            zoom(
-              interval(
-                stop(2, textJustify(TEXT_JUSTIFY_LEFT))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextJustify());
-        assertNotNull(layer.getTextJustify().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextJustify().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getTextJustify().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getTextJustify().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textJustify(TEXT_JUSTIFY_LEFT));
+      assertEquals((String) layer.getTextJustify().getValue(), (String) TEXT_JUSTIFY_LEFT);
     });
   }
 
   @Test
-  public void testTextJustifyAsIdentitySourceFunction() {
+  public void testTextJustifyAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("text-justify");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textJustify(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getTextJustify());
-        assertNotNull(layer.getTextJustify().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextJustify().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextJustify().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getTextJustify().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("text-justify-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextJustifyAsIntervalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-justify");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textJustify(
-            property(
-              "FeaturePropertyA",
-              interval(
-                stop(1, textJustify(TEXT_JUSTIFY_LEFT))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextJustify());
-        assertNotNull(layer.getTextJustify().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextJustify().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextJustify().getFunction()).getProperty());
-        assertEquals(IntervalStops.class, layer.getTextJustify().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = string(Expression.get("undefined"));
+      layer.setProperties(textJustify(expression));
+      assertEquals(layer.getTextJustify().getExpression(), expression);
     });
   }
 
+
   @Test
   public void testTextAnchorAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("text-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textAnchor(TEXT_ANCHOR_CENTER));
-        assertEquals((String) layer.getTextAnchor().getValue(), (String) TEXT_ANCHOR_CENTER);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextAnchorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textAnchor(
-            zoom(
-              interval(
-                stop(2, textAnchor(TEXT_ANCHOR_CENTER))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextAnchor());
-        assertNotNull(layer.getTextAnchor().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextAnchor().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getTextAnchor().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getTextAnchor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textAnchor(TEXT_ANCHOR_CENTER));
+      assertEquals((String) layer.getTextAnchor().getValue(), (String) TEXT_ANCHOR_CENTER);
     });
   }
 
   @Test
-  public void testTextAnchorAsIdentitySourceFunction() {
+  public void testTextAnchorAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("text-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textAnchor(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getTextAnchor());
-        assertNotNull(layer.getTextAnchor().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextAnchor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextAnchor().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getTextAnchor().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("text-anchor-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextAnchorAsIntervalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textAnchor(
-            property(
-              "FeaturePropertyA",
-              interval(
-                stop(1, textAnchor(TEXT_ANCHOR_CENTER))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextAnchor());
-        assertNotNull(layer.getTextAnchor().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextAnchor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextAnchor().getFunction()).getProperty());
-        assertEquals(IntervalStops.class, layer.getTextAnchor().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = string(Expression.get("undefined"));
+      layer.setProperties(textAnchor(expression));
+      assertEquals(layer.getTextAnchor().getExpression(), expression);
     });
   }
 
+
   @Test
   public void testTextMaxAngleAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("text-max-angle");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textMaxAngle(0.3f));
-        assertEquals((Float) layer.getTextMaxAngle().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextMaxAngleAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-max-angle");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textMaxAngle(
-            zoom(
-              exponential(
-                stop(2, textMaxAngle(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextMaxAngle());
-        assertNotNull(layer.getTextMaxAngle().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextMaxAngle().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getTextMaxAngle().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getTextMaxAngle().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getTextMaxAngle().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textMaxAngle(0.3f));
+      assertEquals((Float) layer.getTextMaxAngle().getValue(), (Float) 0.3f);
     });
   }
 
@@ -2531,229 +642,42 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-rotate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textRotate(0.3f));
-        assertEquals((Float) layer.getTextRotate().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextRotateAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-rotate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textRotate(
-            zoom(
-              exponential(
-                stop(2, textRotate(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextRotate());
-        assertNotNull(layer.getTextRotate().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextRotate().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getTextRotate().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getTextRotate().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getTextRotate().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textRotate(0.3f));
+      assertEquals((Float) layer.getTextRotate().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testTextRotateAsIdentitySourceFunction() {
+  public void testTextRotateAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("text-rotate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textRotate(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getTextRotate());
-        assertNotNull(layer.getTextRotate().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextRotate().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextRotate().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getTextRotate().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("text-rotate-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextRotateAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-rotate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textRotate(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, textRotate(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextRotate());
-        assertNotNull(layer.getTextRotate().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextRotate().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextRotate().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getTextRotate().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(textRotate(expression));
+      assertEquals(layer.getTextRotate().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testTextRotateAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-rotate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textRotate(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, textRotate(0.3f))
-              )
-            ).withDefaultValue(textRotate(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextRotate());
-        assertNotNull(layer.getTextRotate().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextRotate().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextRotate().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getTextRotate().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getTextRotate().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getTextRotate().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getTextRotate().getFunction()).getDefaultValue().getValue());
-      }
-    });
-
-  }
-
-  @Test
-  public void testTextRotateAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-rotate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textRotate(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, textRotate(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(textRotate(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextRotate());
-        assertNotNull(layer.getTextRotate().getFunction());
-        assertEquals(CompositeFunction.class, layer.getTextRotate().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getTextRotate().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getTextRotate().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getTextRotate().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getTextRotate().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testTextPaddingAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("text-padding");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textPadding(0.3f));
-        assertEquals((Float) layer.getTextPadding().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextPaddingAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-padding");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textPadding(
-            zoom(
-              exponential(
-                stop(2, textPadding(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextPadding());
-        assertNotNull(layer.getTextPadding().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextPadding().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getTextPadding().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getTextPadding().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getTextPadding().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textPadding(0.3f));
+      assertEquals((Float) layer.getTextPadding().getValue(), (Float) 0.3f);
     });
   }
 
@@ -2762,46 +686,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-keep-upright");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textKeepUpright(true));
-        assertEquals((Boolean) layer.getTextKeepUpright().getValue(), (Boolean) true);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextKeepUprightAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-keep-upright");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textKeepUpright(
-            zoom(
-              interval(
-                stop(2, textKeepUpright(true))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextKeepUpright());
-        assertNotNull(layer.getTextKeepUpright().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextKeepUpright().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getTextKeepUpright().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getTextKeepUpright().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textKeepUpright(true));
+      assertEquals((Boolean) layer.getTextKeepUpright().getValue(), (Boolean) true);
     });
   }
 
@@ -2810,209 +700,42 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-transform");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textTransform(TEXT_TRANSFORM_NONE));
-        assertEquals((String) layer.getTextTransform().getValue(), (String) TEXT_TRANSFORM_NONE);
-      }
-    });
-  }
-
-  @Test
-  public void testTextTransformAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-transform");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textTransform(
-            zoom(
-              interval(
-                stop(2, textTransform(TEXT_TRANSFORM_NONE))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextTransform());
-        assertNotNull(layer.getTextTransform().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextTransform().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getTextTransform().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getTextTransform().getFunction().getStops()).size());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextTransformAsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-transform");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textTransform(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getTextTransform());
-        assertNotNull(layer.getTextTransform().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextTransform().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextTransform().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getTextTransform().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(textTransform(TEXT_TRANSFORM_NONE));
+      assertEquals((String) layer.getTextTransform().getValue(), (String) TEXT_TRANSFORM_NONE);
     });
   }
 
   @Test
-  public void testTextTransformAsIntervalSourceFunction() {
+  public void testTextTransformAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("text-transform");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textTransform(
-            property(
-              "FeaturePropertyA",
-              interval(
-                stop(1, textTransform(TEXT_TRANSFORM_NONE))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextTransform());
-        assertNotNull(layer.getTextTransform().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextTransform().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextTransform().getFunction()).getProperty());
-        assertEquals(IntervalStops.class, layer.getTextTransform().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("text-transform-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextOffsetAsConstant() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-offset");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textOffset(new Float[] {0f, 0f}));
-        assertEquals((Float[]) layer.getTextOffset().getValue(), (Float[]) new Float[] {0f, 0f});
-      }
+      // Set and Get
+      Expression expression = string(Expression.get("undefined"));
+      layer.setProperties(textTransform(expression));
+      assertEquals(layer.getTextTransform().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testTextOffsetAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-offset");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textOffset(
-            zoom(
-              exponential(
-                stop(2, textOffset(new Float[] {0f, 0f}))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextOffset());
-        assertNotNull(layer.getTextOffset().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextOffset().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getTextOffset().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getTextOffset().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getTextOffset().getFunction().getStops()).size());
-      }
-    });
-  }
 
   @Test
-  public void testTextOffsetAsIdentitySourceFunction() {
+  public void testTextOffsetAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("text-offset");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textOffset(property("FeaturePropertyA", Stops.<Float[]>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getTextOffset());
-        assertNotNull(layer.getTextOffset().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextOffset().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextOffset().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getTextOffset().getFunction().getStops().getClass());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextOffsetAsIntervalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-offset");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textOffset(
-            property(
-              "FeaturePropertyA",
-              interval(
-                stop(1, textOffset(new Float[] {0f, 0f}))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextOffset());
-        assertNotNull(layer.getTextOffset().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextOffset().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextOffset().getFunction()).getProperty());
-        assertEquals(IntervalStops.class, layer.getTextOffset().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(textOffset(new Float[] {0f, 0f}));
+      assertEquals((Float[]) layer.getTextOffset().getValue(), (Float[]) new Float[] {0f, 0f});
     });
   }
 
@@ -3021,46 +744,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-allow-overlap");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textAllowOverlap(true));
-        assertEquals((Boolean) layer.getTextAllowOverlap().getValue(), (Boolean) true);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextAllowOverlapAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-allow-overlap");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textAllowOverlap(
-            zoom(
-              interval(
-                stop(2, textAllowOverlap(true))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextAllowOverlap());
-        assertNotNull(layer.getTextAllowOverlap().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextAllowOverlap().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getTextAllowOverlap().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getTextAllowOverlap().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textAllowOverlap(true));
+      assertEquals((Boolean) layer.getTextAllowOverlap().getValue(), (Boolean) true);
     });
   }
 
@@ -3069,46 +758,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-ignore-placement");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textIgnorePlacement(true));
-        assertEquals((Boolean) layer.getTextIgnorePlacement().getValue(), (Boolean) true);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextIgnorePlacementAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-ignore-placement");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textIgnorePlacement(
-            zoom(
-              interval(
-                stop(2, textIgnorePlacement(true))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextIgnorePlacement());
-        assertNotNull(layer.getTextIgnorePlacement().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextIgnorePlacement().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getTextIgnorePlacement().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getTextIgnorePlacement().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textIgnorePlacement(true));
+      assertEquals((Boolean) layer.getTextIgnorePlacement().getValue(), (Boolean) true);
     });
   }
 
@@ -3117,46 +772,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-optional");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textOptional(true));
-        assertEquals((Boolean) layer.getTextOptional().getValue(), (Boolean) true);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextOptionalAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-optional");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textOptional(
-            zoom(
-              interval(
-                stop(2, textOptional(true))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextOptional());
-        assertNotNull(layer.getTextOptional().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextOptional().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getTextOptional().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getTextOptional().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textOptional(true));
+      assertEquals((Boolean) layer.getTextOptional().getValue(), (Boolean) true);
     });
   }
 
@@ -3165,216 +786,58 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-opacityTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setIconOpacityTransition(options);
-        assertEquals(layer.getIconOpacityTransition(), options);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconOpacityAsConstant() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconOpacity(0.3f));
-        assertEquals((Float) layer.getIconOpacity().getValue(), (Float) 0.3f);
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setIconOpacityTransition(options);
+      assertEquals(layer.getIconOpacityTransition(), options);
     });
   }
 
   @Test
-  public void testIconOpacityAsCameraFunction() {
+  public void testIconOpacityAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconOpacity(
-            zoom(
-              exponential(
-                stop(2, iconOpacity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconOpacity());
-        assertNotNull(layer.getIconOpacity().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconOpacity().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getIconOpacity().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getIconOpacity().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getIconOpacity().getFunction().getStops()).size());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconOpacityAsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconOpacity(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getIconOpacity());
-        assertNotNull(layer.getIconOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconOpacity().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getIconOpacity().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(iconOpacity(0.3f));
+      assertEquals((Float) layer.getIconOpacity().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testIconOpacityAsExponentialSourceFunction() {
+  public void testIconOpacityAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("icon-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconOpacity(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, iconOpacity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconOpacity());
-        assertNotNull(layer.getIconOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconOpacity().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getIconOpacity().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("icon-opacity-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconOpacityAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconOpacity(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, iconOpacity(0.3f))
-              )
-            ).withDefaultValue(iconOpacity(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconOpacity());
-        assertNotNull(layer.getIconOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconOpacity().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getIconOpacity().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getIconOpacity().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getIconOpacity().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getIconOpacity().getFunction()).getDefaultValue().getValue());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(iconOpacity(expression));
+      assertEquals(layer.getIconOpacity().getExpression(), expression);
     });
-
   }
 
-  @Test
-  public void testIconOpacityAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconOpacity(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, iconOpacity(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(iconOpacity(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconOpacity());
-        assertNotNull(layer.getIconOpacity().getFunction());
-        assertEquals(CompositeFunction.class, layer.getIconOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getIconOpacity().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getIconOpacity().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getIconOpacity().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getIconOpacity().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testIconColorTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-colorTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setIconColorTransition(options);
-        assertEquals(layer.getIconColorTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setIconColorTransition(options);
+      assertEquals(layer.getIconColorTransition(), options);
     });
   }
 
@@ -3383,157 +846,42 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconColor("rgba(0, 0, 0, 1)"));
-        assertEquals((String) layer.getIconColor().getValue(), (String) "rgba(0, 0, 0, 1)");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconColorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconColor(
-            zoom(
-              exponential(
-                stop(2, iconColor("rgba(0, 0, 0, 1)"))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconColor());
-        assertNotNull(layer.getIconColor().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconColor().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getIconColor().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getIconColor().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getIconColor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconColor("rgba(0, 0, 0, 1)"));
+      assertEquals((String) layer.getIconColor().getValue(), (String) "rgba(0, 0, 0, 1)");
     });
   }
 
   @Test
-  public void testIconColorAsIdentitySourceFunction() {
+  public void testIconColorAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("icon-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconColor(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getIconColor());
-        assertNotNull(layer.getIconColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconColor().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getIconColor().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("icon-color-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconColorAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconColor(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(Color.RED, iconColor(Color.RED))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconColor());
-        assertNotNull(layer.getIconColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconColor().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getIconColor().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = toColor(Expression.get("undefined"));
+      layer.setProperties(iconColor(expression));
+      assertEquals(layer.getIconColor().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testIconColorAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconColor(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop("valueA", iconColor(Color.RED))
-              )
-            ).withDefaultValue(iconColor(Color.GREEN))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconColor());
-        assertNotNull(layer.getIconColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconColor().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getIconColor().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getIconColor().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getIconColor().getFunction()).getDefaultValue().getValue());
-        assertEquals(Color.GREEN, (int) ((SourceFunction) layer.getIconColor().getFunction()).getDefaultValue().getColorInt());
-      }
-    });
-
-  }
 
   @Test
   public void testIconColorAsIntConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconColor(Color.RED));
-        assertEquals(layer.getIconColorAsInt(), Color.RED);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      layer.setProperties(iconColor(Color.RED));
+      assertEquals(layer.getIconColorAsInt(), Color.RED);
     });
   }
 
@@ -3542,16 +890,13 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-halo-colorTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setIconHaloColorTransition(options);
-        assertEquals(layer.getIconHaloColorTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setIconHaloColorTransition(options);
+      assertEquals(layer.getIconHaloColorTransition(), options);
     });
   }
 
@@ -3560,157 +905,42 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-halo-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconHaloColor("rgba(0, 0, 0, 1)"));
-        assertEquals((String) layer.getIconHaloColor().getValue(), (String) "rgba(0, 0, 0, 1)");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconHaloColorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-halo-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconHaloColor(
-            zoom(
-              exponential(
-                stop(2, iconHaloColor("rgba(0, 0, 0, 1)"))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconHaloColor());
-        assertNotNull(layer.getIconHaloColor().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconHaloColor().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getIconHaloColor().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getIconHaloColor().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getIconHaloColor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconHaloColor("rgba(0, 0, 0, 1)"));
+      assertEquals((String) layer.getIconHaloColor().getValue(), (String) "rgba(0, 0, 0, 1)");
     });
   }
 
   @Test
-  public void testIconHaloColorAsIdentitySourceFunction() {
+  public void testIconHaloColorAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("icon-halo-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconHaloColor(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getIconHaloColor());
-        assertNotNull(layer.getIconHaloColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconHaloColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconHaloColor().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getIconHaloColor().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("icon-halo-color-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconHaloColorAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-halo-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconHaloColor(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(Color.RED, iconHaloColor(Color.RED))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconHaloColor());
-        assertNotNull(layer.getIconHaloColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconHaloColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconHaloColor().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getIconHaloColor().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = toColor(Expression.get("undefined"));
+      layer.setProperties(iconHaloColor(expression));
+      assertEquals(layer.getIconHaloColor().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testIconHaloColorAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-halo-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconHaloColor(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop("valueA", iconHaloColor(Color.RED))
-              )
-            ).withDefaultValue(iconHaloColor(Color.GREEN))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconHaloColor());
-        assertNotNull(layer.getIconHaloColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconHaloColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconHaloColor().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getIconHaloColor().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getIconHaloColor().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getIconHaloColor().getFunction()).getDefaultValue().getValue());
-        assertEquals(Color.GREEN, (int) ((SourceFunction) layer.getIconHaloColor().getFunction()).getDefaultValue().getColorInt());
-      }
-    });
-
-  }
 
   @Test
   public void testIconHaloColorAsIntConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-halo-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconHaloColor(Color.RED));
-        assertEquals(layer.getIconHaloColorAsInt(), Color.RED);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      layer.setProperties(iconHaloColor(Color.RED));
+      assertEquals(layer.getIconHaloColorAsInt(), Color.RED);
     });
   }
 
@@ -3719,16 +949,13 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-halo-widthTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setIconHaloWidthTransition(options);
-        assertEquals(layer.getIconHaloWidthTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setIconHaloWidthTransition(options);
+      assertEquals(layer.getIconHaloWidthTransition(), options);
     });
   }
 
@@ -3737,398 +964,88 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-halo-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconHaloWidth(0.3f));
-        assertEquals((Float) layer.getIconHaloWidth().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconHaloWidthAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-halo-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconHaloWidth(
-            zoom(
-              exponential(
-                stop(2, iconHaloWidth(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconHaloWidth());
-        assertNotNull(layer.getIconHaloWidth().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconHaloWidth().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getIconHaloWidth().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getIconHaloWidth().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getIconHaloWidth().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconHaloWidth(0.3f));
+      assertEquals((Float) layer.getIconHaloWidth().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testIconHaloWidthAsIdentitySourceFunction() {
+  public void testIconHaloWidthAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("icon-halo-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconHaloWidth(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getIconHaloWidth());
-        assertNotNull(layer.getIconHaloWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconHaloWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconHaloWidth().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getIconHaloWidth().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("icon-halo-width-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconHaloWidthAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-halo-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconHaloWidth(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, iconHaloWidth(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconHaloWidth());
-        assertNotNull(layer.getIconHaloWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconHaloWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconHaloWidth().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getIconHaloWidth().getFunction().getStops().getClass());
-      }
-    });
-  }
-
-  @Test
-  public void testIconHaloWidthAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-halo-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconHaloWidth(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, iconHaloWidth(0.3f))
-              )
-            ).withDefaultValue(iconHaloWidth(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconHaloWidth());
-        assertNotNull(layer.getIconHaloWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconHaloWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconHaloWidth().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getIconHaloWidth().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getIconHaloWidth().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getIconHaloWidth().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getIconHaloWidth().getFunction()).getDefaultValue().getValue());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(iconHaloWidth(expression));
+      assertEquals(layer.getIconHaloWidth().getExpression(), expression);
     });
-
   }
 
-  @Test
-  public void testIconHaloWidthAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-halo-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconHaloWidth(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, iconHaloWidth(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(iconHaloWidth(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconHaloWidth());
-        assertNotNull(layer.getIconHaloWidth().getFunction());
-        assertEquals(CompositeFunction.class, layer.getIconHaloWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getIconHaloWidth().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getIconHaloWidth().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getIconHaloWidth().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getIconHaloWidth().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testIconHaloBlurTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-halo-blurTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setIconHaloBlurTransition(options);
-        assertEquals(layer.getIconHaloBlurTransition(), options);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconHaloBlurAsConstant() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-halo-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconHaloBlur(0.3f));
-        assertEquals((Float) layer.getIconHaloBlur().getValue(), (Float) 0.3f);
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setIconHaloBlurTransition(options);
+      assertEquals(layer.getIconHaloBlurTransition(), options);
     });
   }
 
   @Test
-  public void testIconHaloBlurAsCameraFunction() {
+  public void testIconHaloBlurAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-halo-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconHaloBlur(
-            zoom(
-              exponential(
-                stop(2, iconHaloBlur(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconHaloBlur());
-        assertNotNull(layer.getIconHaloBlur().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconHaloBlur().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getIconHaloBlur().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getIconHaloBlur().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getIconHaloBlur().getFunction().getStops()).size());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconHaloBlurAsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-halo-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconHaloBlur(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getIconHaloBlur());
-        assertNotNull(layer.getIconHaloBlur().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconHaloBlur().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconHaloBlur().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getIconHaloBlur().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(iconHaloBlur(0.3f));
+      assertEquals((Float) layer.getIconHaloBlur().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testIconHaloBlurAsExponentialSourceFunction() {
+  public void testIconHaloBlurAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("icon-halo-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconHaloBlur(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, iconHaloBlur(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconHaloBlur());
-        assertNotNull(layer.getIconHaloBlur().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconHaloBlur().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconHaloBlur().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getIconHaloBlur().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("icon-halo-blur-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconHaloBlurAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-halo-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconHaloBlur(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, iconHaloBlur(0.3f))
-              )
-            ).withDefaultValue(iconHaloBlur(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconHaloBlur());
-        assertNotNull(layer.getIconHaloBlur().getFunction());
-        assertEquals(SourceFunction.class, layer.getIconHaloBlur().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getIconHaloBlur().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getIconHaloBlur().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getIconHaloBlur().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getIconHaloBlur().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getIconHaloBlur().getFunction()).getDefaultValue().getValue());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(iconHaloBlur(expression));
+      assertEquals(layer.getIconHaloBlur().getExpression(), expression);
     });
-
   }
 
-  @Test
-  public void testIconHaloBlurAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-halo-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconHaloBlur(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, iconHaloBlur(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(iconHaloBlur(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconHaloBlur());
-        assertNotNull(layer.getIconHaloBlur().getFunction());
-        assertEquals(CompositeFunction.class, layer.getIconHaloBlur().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getIconHaloBlur().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getIconHaloBlur().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getIconHaloBlur().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getIconHaloBlur().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testIconTranslateTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-translateTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setIconTranslateTransition(options);
-        assertEquals(layer.getIconTranslateTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setIconTranslateTransition(options);
+      assertEquals(layer.getIconTranslateTransition(), options);
     });
   }
 
@@ -4137,47 +1054,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-translate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconTranslate(new Float[] {0f, 0f}));
-        assertEquals((Float[]) layer.getIconTranslate().getValue(), (Float[]) new Float[] {0f, 0f});
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconTranslateAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-translate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconTranslate(
-            zoom(
-              exponential(
-                stop(2, iconTranslate(new Float[] {0f, 0f}))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconTranslate());
-        assertNotNull(layer.getIconTranslate().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconTranslate().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getIconTranslate().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getIconTranslate().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getIconTranslate().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconTranslate(new Float[] {0f, 0f}));
+      assertEquals((Float[]) layer.getIconTranslate().getValue(), (Float[]) new Float[] {0f, 0f});
     });
   }
 
@@ -4186,46 +1068,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("icon-translate-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(iconTranslateAnchor(ICON_TRANSLATE_ANCHOR_MAP));
-        assertEquals((String) layer.getIconTranslateAnchor().getValue(), (String) ICON_TRANSLATE_ANCHOR_MAP);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testIconTranslateAnchorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("icon-translate-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          iconTranslateAnchor(
-            zoom(
-              interval(
-                stop(2, iconTranslateAnchor(ICON_TRANSLATE_ANCHOR_MAP))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getIconTranslateAnchor());
-        assertNotNull(layer.getIconTranslateAnchor().getFunction());
-        assertEquals(CameraFunction.class, layer.getIconTranslateAnchor().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getIconTranslateAnchor().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getIconTranslateAnchor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(iconTranslateAnchor(ICON_TRANSLATE_ANCHOR_MAP));
+      assertEquals((String) layer.getIconTranslateAnchor().getValue(), (String) ICON_TRANSLATE_ANCHOR_MAP);
     });
   }
 
@@ -4234,216 +1082,58 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-opacityTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setTextOpacityTransition(options);
-        assertEquals(layer.getTextOpacityTransition(), options);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextOpacityAsConstant() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textOpacity(0.3f));
-        assertEquals((Float) layer.getTextOpacity().getValue(), (Float) 0.3f);
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setTextOpacityTransition(options);
+      assertEquals(layer.getTextOpacityTransition(), options);
     });
   }
 
   @Test
-  public void testTextOpacityAsCameraFunction() {
+  public void testTextOpacityAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("text-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textOpacity(
-            zoom(
-              exponential(
-                stop(2, textOpacity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextOpacity());
-        assertNotNull(layer.getTextOpacity().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextOpacity().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getTextOpacity().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getTextOpacity().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getTextOpacity().getFunction().getStops()).size());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextOpacityAsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textOpacity(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getTextOpacity());
-        assertNotNull(layer.getTextOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextOpacity().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getTextOpacity().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(textOpacity(0.3f));
+      assertEquals((Float) layer.getTextOpacity().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testTextOpacityAsExponentialSourceFunction() {
+  public void testTextOpacityAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("text-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textOpacity(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, textOpacity(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextOpacity());
-        assertNotNull(layer.getTextOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextOpacity().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getTextOpacity().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("text-opacity-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextOpacityAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textOpacity(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, textOpacity(0.3f))
-              )
-            ).withDefaultValue(textOpacity(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextOpacity());
-        assertNotNull(layer.getTextOpacity().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextOpacity().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getTextOpacity().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getTextOpacity().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getTextOpacity().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getTextOpacity().getFunction()).getDefaultValue().getValue());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(textOpacity(expression));
+      assertEquals(layer.getTextOpacity().getExpression(), expression);
     });
-
   }
 
-  @Test
-  public void testTextOpacityAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-opacity");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textOpacity(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, textOpacity(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(textOpacity(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextOpacity());
-        assertNotNull(layer.getTextOpacity().getFunction());
-        assertEquals(CompositeFunction.class, layer.getTextOpacity().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getTextOpacity().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getTextOpacity().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getTextOpacity().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getTextOpacity().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testTextColorTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("text-colorTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setTextColorTransition(options);
-        assertEquals(layer.getTextColorTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setTextColorTransition(options);
+      assertEquals(layer.getTextColorTransition(), options);
     });
   }
 
@@ -4452,157 +1142,42 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textColor("rgba(0, 0, 0, 1)"));
-        assertEquals((String) layer.getTextColor().getValue(), (String) "rgba(0, 0, 0, 1)");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextColorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textColor(
-            zoom(
-              exponential(
-                stop(2, textColor("rgba(0, 0, 0, 1)"))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextColor());
-        assertNotNull(layer.getTextColor().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextColor().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getTextColor().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getTextColor().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getTextColor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textColor("rgba(0, 0, 0, 1)"));
+      assertEquals((String) layer.getTextColor().getValue(), (String) "rgba(0, 0, 0, 1)");
     });
   }
 
   @Test
-  public void testTextColorAsIdentitySourceFunction() {
+  public void testTextColorAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("text-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textColor(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getTextColor());
-        assertNotNull(layer.getTextColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextColor().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getTextColor().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("text-color-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextColorAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textColor(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(Color.RED, textColor(Color.RED))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextColor());
-        assertNotNull(layer.getTextColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextColor().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getTextColor().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = toColor(Expression.get("undefined"));
+      layer.setProperties(textColor(expression));
+      assertEquals(layer.getTextColor().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testTextColorAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textColor(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop("valueA", textColor(Color.RED))
-              )
-            ).withDefaultValue(textColor(Color.GREEN))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextColor());
-        assertNotNull(layer.getTextColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextColor().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getTextColor().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getTextColor().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getTextColor().getFunction()).getDefaultValue().getValue());
-        assertEquals(Color.GREEN, (int) ((SourceFunction) layer.getTextColor().getFunction()).getDefaultValue().getColorInt());
-      }
-    });
-
-  }
 
   @Test
   public void testTextColorAsIntConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("text-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textColor(Color.RED));
-        assertEquals(layer.getTextColorAsInt(), Color.RED);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      layer.setProperties(textColor(Color.RED));
+      assertEquals(layer.getTextColorAsInt(), Color.RED);
     });
   }
 
@@ -4611,16 +1186,13 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-halo-colorTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setTextHaloColorTransition(options);
-        assertEquals(layer.getTextHaloColorTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setTextHaloColorTransition(options);
+      assertEquals(layer.getTextHaloColorTransition(), options);
     });
   }
 
@@ -4629,157 +1201,42 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-halo-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textHaloColor("rgba(0, 0, 0, 1)"));
-        assertEquals((String) layer.getTextHaloColor().getValue(), (String) "rgba(0, 0, 0, 1)");
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextHaloColorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-halo-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textHaloColor(
-            zoom(
-              exponential(
-                stop(2, textHaloColor("rgba(0, 0, 0, 1)"))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextHaloColor());
-        assertNotNull(layer.getTextHaloColor().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextHaloColor().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getTextHaloColor().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getTextHaloColor().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getTextHaloColor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textHaloColor("rgba(0, 0, 0, 1)"));
+      assertEquals((String) layer.getTextHaloColor().getValue(), (String) "rgba(0, 0, 0, 1)");
     });
   }
 
   @Test
-  public void testTextHaloColorAsIdentitySourceFunction() {
+  public void testTextHaloColorAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("text-halo-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textHaloColor(property("FeaturePropertyA", Stops.<String>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getTextHaloColor());
-        assertNotNull(layer.getTextHaloColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextHaloColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextHaloColor().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getTextHaloColor().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("text-halo-color-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextHaloColorAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-halo-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textHaloColor(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(Color.RED, textHaloColor(Color.RED))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextHaloColor());
-        assertNotNull(layer.getTextHaloColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextHaloColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextHaloColor().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getTextHaloColor().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = toColor(Expression.get("undefined"));
+      layer.setProperties(textHaloColor(expression));
+      assertEquals(layer.getTextHaloColor().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testTextHaloColorAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-halo-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textHaloColor(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop("valueA", textHaloColor(Color.RED))
-              )
-            ).withDefaultValue(textHaloColor(Color.GREEN))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextHaloColor());
-        assertNotNull(layer.getTextHaloColor().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextHaloColor().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextHaloColor().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getTextHaloColor().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getTextHaloColor().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getTextHaloColor().getFunction()).getDefaultValue().getValue());
-        assertEquals(Color.GREEN, (int) ((SourceFunction) layer.getTextHaloColor().getFunction()).getDefaultValue().getColorInt());
-      }
-    });
-
-  }
 
   @Test
   public void testTextHaloColorAsIntConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("text-halo-color");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textHaloColor(Color.RED));
-        assertEquals(layer.getTextHaloColorAsInt(), Color.RED);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      layer.setProperties(textHaloColor(Color.RED));
+      assertEquals(layer.getTextHaloColorAsInt(), Color.RED);
     });
   }
 
@@ -4788,216 +1245,58 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-halo-widthTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setTextHaloWidthTransition(options);
-        assertEquals(layer.getTextHaloWidthTransition(), options);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextHaloWidthAsConstant() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-halo-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textHaloWidth(0.3f));
-        assertEquals((Float) layer.getTextHaloWidth().getValue(), (Float) 0.3f);
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setTextHaloWidthTransition(options);
+      assertEquals(layer.getTextHaloWidthTransition(), options);
     });
   }
 
   @Test
-  public void testTextHaloWidthAsCameraFunction() {
+  public void testTextHaloWidthAsConstant() {
     validateTestSetup();
     setupLayer();
     Timber.i("text-halo-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textHaloWidth(
-            zoom(
-              exponential(
-                stop(2, textHaloWidth(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextHaloWidth());
-        assertNotNull(layer.getTextHaloWidth().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextHaloWidth().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getTextHaloWidth().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getTextHaloWidth().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getTextHaloWidth().getFunction().getStops()).size());
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextHaloWidthAsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-halo-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textHaloWidth(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getTextHaloWidth());
-        assertNotNull(layer.getTextHaloWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextHaloWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextHaloWidth().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getTextHaloWidth().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      layer.setProperties(textHaloWidth(0.3f));
+      assertEquals((Float) layer.getTextHaloWidth().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testTextHaloWidthAsExponentialSourceFunction() {
+  public void testTextHaloWidthAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("text-halo-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textHaloWidth(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, textHaloWidth(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextHaloWidth());
-        assertNotNull(layer.getTextHaloWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextHaloWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextHaloWidth().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getTextHaloWidth().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("text-halo-width-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextHaloWidthAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-halo-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textHaloWidth(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, textHaloWidth(0.3f))
-              )
-            ).withDefaultValue(textHaloWidth(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextHaloWidth());
-        assertNotNull(layer.getTextHaloWidth().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextHaloWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextHaloWidth().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getTextHaloWidth().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getTextHaloWidth().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getTextHaloWidth().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getTextHaloWidth().getFunction()).getDefaultValue().getValue());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(textHaloWidth(expression));
+      assertEquals(layer.getTextHaloWidth().getExpression(), expression);
     });
-
   }
 
-  @Test
-  public void testTextHaloWidthAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-halo-width");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textHaloWidth(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, textHaloWidth(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(textHaloWidth(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextHaloWidth());
-        assertNotNull(layer.getTextHaloWidth().getFunction());
-        assertEquals(CompositeFunction.class, layer.getTextHaloWidth().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getTextHaloWidth().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getTextHaloWidth().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getTextHaloWidth().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getTextHaloWidth().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testTextHaloBlurTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("text-halo-blurTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setTextHaloBlurTransition(options);
-        assertEquals(layer.getTextHaloBlurTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setTextHaloBlurTransition(options);
+      assertEquals(layer.getTextHaloBlurTransition(), options);
     });
   }
 
@@ -5006,198 +1305,43 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-halo-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textHaloBlur(0.3f));
-        assertEquals((Float) layer.getTextHaloBlur().getValue(), (Float) 0.3f);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextHaloBlurAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-halo-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textHaloBlur(
-            zoom(
-              exponential(
-                stop(2, textHaloBlur(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextHaloBlur());
-        assertNotNull(layer.getTextHaloBlur().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextHaloBlur().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getTextHaloBlur().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getTextHaloBlur().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getTextHaloBlur().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textHaloBlur(0.3f));
+      assertEquals((Float) layer.getTextHaloBlur().getValue(), (Float) 0.3f);
     });
   }
 
   @Test
-  public void testTextHaloBlurAsIdentitySourceFunction() {
+  public void testTextHaloBlurAsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("text-halo-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textHaloBlur(property("FeaturePropertyA", Stops.<Float>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.getTextHaloBlur());
-        assertNotNull(layer.getTextHaloBlur().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextHaloBlur().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextHaloBlur().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.getTextHaloBlur().getFunction().getStops().getClass());
-      }
-    });
-  }
+    Timber.i("text-halo-blur-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextHaloBlurAsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-halo-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textHaloBlur(
-            property(
-              "FeaturePropertyA",
-              exponential(
-                stop(0.3f, textHaloBlur(0.3f))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextHaloBlur());
-        assertNotNull(layer.getTextHaloBlur().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextHaloBlur().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextHaloBlur().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getTextHaloBlur().getFunction().getStops().getClass());
-      }
+      // Set and Get
+      Expression expression = number(Expression.get("undefined"));
+      layer.setProperties(textHaloBlur(expression));
+      assertEquals(layer.getTextHaloBlur().getExpression(), expression);
     });
   }
 
-  @Test
-  public void testTextHaloBlurAsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-halo-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textHaloBlur(
-            property(
-              "FeaturePropertyA",
-              categorical(
-                stop(1.0f, textHaloBlur(0.3f))
-              )
-            ).withDefaultValue(textHaloBlur(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextHaloBlur());
-        assertNotNull(layer.getTextHaloBlur().getFunction());
-        assertEquals(SourceFunction.class, layer.getTextHaloBlur().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.getTextHaloBlur().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.getTextHaloBlur().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.getTextHaloBlur().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.getTextHaloBlur().getFunction()).getDefaultValue().getValue());
-        assertEquals(0.3f, ((SourceFunction) layer.getTextHaloBlur().getFunction()).getDefaultValue().getValue());
-      }
-    });
-
-  }
-
-  @Test
-  public void testTextHaloBlurAsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-halo-blur");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textHaloBlur(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, textHaloBlur(0.9f))
-              ).withBase(0.5f)
-            ).withDefaultValue(textHaloBlur(0.3f))
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextHaloBlur());
-        assertNotNull(layer.getTextHaloBlur().getFunction());
-        assertEquals(CompositeFunction.class, layer.getTextHaloBlur().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.getTextHaloBlur().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.getTextHaloBlur().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.getTextHaloBlur().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, Float>, Float> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, Float>, Float>) layer.getTextHaloBlur().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, Float>, Float> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
 
   @Test
   public void testTextTranslateTransition() {
     validateTestSetup();
     setupLayer();
     Timber.i("text-translateTransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.setTextTranslateTransition(options);
-        assertEquals(layer.getTextTranslateTransition(), options);
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.setTextTranslateTransition(options);
+      assertEquals(layer.getTextTranslateTransition(), options);
     });
   }
 
@@ -5206,47 +1350,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-translate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textTranslate(new Float[] {0f, 0f}));
-        assertEquals((Float[]) layer.getTextTranslate().getValue(), (Float[]) new Float[] {0f, 0f});
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextTranslateAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-translate");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textTranslate(
-            zoom(
-              exponential(
-                stop(2, textTranslate(new Float[] {0f, 0f}))
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextTranslate());
-        assertNotNull(layer.getTextTranslate().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextTranslate().getFunction().getClass());
-        assertEquals(ExponentialStops.class, layer.getTextTranslate().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.getTextTranslate().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.getTextTranslate().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textTranslate(new Float[] {0f, 0f}));
+      assertEquals((Float[]) layer.getTextTranslate().getValue(), (Float[]) new Float[] {0f, 0f});
     });
   }
 
@@ -5255,47 +1364,12 @@ public class SymbolLayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("text-translate-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set and Get
-        layer.setProperties(textTranslateAnchor(TEXT_TRANSLATE_ANCHOR_MAP));
-        assertEquals((String) layer.getTextTranslateAnchor().getValue(), (String) TEXT_TRANSLATE_ANCHOR_MAP);
-      }
-    });
-  }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-  @Test
-  public void testTextTranslateAnchorAsCameraFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("text-translate-anchor");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          textTranslateAnchor(
-            zoom(
-              interval(
-                stop(2, textTranslateAnchor(TEXT_TRANSLATE_ANCHOR_MAP))
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.getTextTranslateAnchor());
-        assertNotNull(layer.getTextTranslateAnchor().getFunction());
-        assertEquals(CameraFunction.class, layer.getTextTranslateAnchor().getFunction().getClass());
-        assertEquals(IntervalStops.class, layer.getTextTranslateAnchor().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.getTextTranslateAnchor().getFunction().getStops()).size());
-      }
+      // Set and Get
+      layer.setProperties(textTranslateAnchor(TEXT_TRANSLATE_ANCHOR_MAP));
+      assertEquals((String) layer.getTextTranslateAnchor().getValue(), (String) TEXT_TRANSLATE_ANCHOR_MAP);
     });
   }
-
-}
+}
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/layer.junit.ejs b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/layer.junit.ejs
index 4e014c4384..09d4328b70 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/layer.junit.ejs
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/layer.junit.ejs
@@ -7,31 +7,18 @@
 package com.mapbox.mapboxsdk.testapp.style;
 
 import android.graphics.Color;
-import android.support.test.espresso.UiController;
 import android.support.test.runner.AndroidJUnit4;
 
 import timber.log.Timber;
 
-import com.mapbox.mapboxsdk.maps.MapboxMap;
-import com.mapbox.mapboxsdk.style.functions.CompositeFunction;
-import com.mapbox.mapboxsdk.style.functions.CameraFunction;
-import com.mapbox.mapboxsdk.style.functions.SourceFunction;
-import com.mapbox.mapboxsdk.style.functions.stops.CategoricalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.ExponentialStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IdentityStops;
-import com.mapbox.mapboxsdk.style.functions.stops.IntervalStops;
-import com.mapbox.mapboxsdk.style.functions.stops.Stop;
-import com.mapbox.mapboxsdk.style.functions.stops.Stops;
+import com.mapbox.mapboxsdk.style.expressions.Expression;
 import com.mapbox.mapboxsdk.style.layers.<%- camelize(type) %>Layer;
-import com.mapbox.mapboxsdk.testapp.action.MapboxMapAction;
 import com.mapbox.mapboxsdk.testapp.activity.BaseActivityTest;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import static com.mapbox.mapboxsdk.style.functions.Function.*;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stop.stop;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stops.*;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.*;
 import static com.mapbox.mapboxsdk.testapp.action.MapboxMapAction.invoke;
 import static org.junit.Assert.*;
 import static com.mapbox.mapboxsdk.style.layers.Property.*;
@@ -56,25 +43,19 @@ public class <%- camelize(type) %>LayerTest extends BaseActivityTest {
   private void setupLayer() {
 <% if (type === 'background') { -%>
     Timber.i("Retrieving layer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        layer = mapboxMap.getLayerAs("background");
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      layer = mapboxMap.getLayerAs("background");
     });
 <% } else { -%>
     Timber.i("Retrieving layer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
-          Timber.i("Adding layer");
-          layer = new <%- camelize(type) %>Layer("my-layer", "composite");
-          layer.setSourceLayer("composite");
-          mapboxMap.addLayer(layer);
-          // Layer reference is now stale, get new reference
-          layer = mapboxMap.getLayerAs("my-layer");
-        }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      if ((layer = mapboxMap.getLayerAs("my-layer")) == null) {
+        Timber.i("Adding layer");
+        layer = new <%- camelize(type) %>Layer("my-layer", "composite");
+        layer.setSourceLayer("composite");
+        mapboxMap.addLayer(layer);
+        // Layer reference is now stale, get new reference
+        layer = mapboxMap.getLayerAs("my-layer");
       }
     });
 <% } -%>
@@ -85,18 +66,15 @@ public class <%- camelize(type) %>LayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("Visibility");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Get initial
-        assertEquals(layer.getVisibility().getValue(), VISIBLE);
+      // Get initial
+      assertEquals(layer.getVisibility().getValue(), VISIBLE);
 
-        // Set
-        layer.setProperties(visibility(NONE));
-        assertEquals(layer.getVisibility().getValue(), NONE);
-      }
+      // Set
+      layer.setProperties(visibility(NONE));
+      assertEquals(layer.getVisibility().getValue(), NONE);
     });
   }
 <% if (!(type === 'background' || type === 'raster' || type === 'hillshade')) { -%>
@@ -106,19 +84,16 @@ public class <%- camelize(type) %>LayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("SourceLayer");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Get initial
-        assertEquals(layer.getSourceLayer(), "composite");
+      // Get initial
+      assertEquals(layer.getSourceLayer(), "composite");
 
-        // Set
-        final String sourceLayer = "test";
-        layer.setSourceLayer(sourceLayer);
-        assertEquals(layer.getSourceLayer(), sourceLayer);
-      }
+      // Set
+      final String sourceLayer = "test";
+      layer.setSourceLayer(sourceLayer);
+      assertEquals(layer.getSourceLayer(), sourceLayer);
     });
   }
 <% } -%>
@@ -131,16 +106,13 @@ public class <%- camelize(type) %>LayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("<%- property.name %>TransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        layer.set<%- camelize(property.name) %>Transition(options);
-        assertEquals(layer.get<%- camelize(property.name) %>Transition(), options);
-      }
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      layer.set<%- camelize(property.name) %>Transition(options);
+      assertEquals(layer.get<%- camelize(property.name) %>Transition(), options);
     });
   }
 <% } -%>
@@ -150,291 +122,32 @@ public class <%- camelize(type) %>LayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("<%- property.name %>");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Set and Get
-        layer.setProperties(<%- camelizeWithLeadingLowercase(property.name) %>(<%- defaultValueJava(property) %>));
-        assertEquals((<%- propertyType(property) %>) layer.get<%- camelize(property.name) %>().getValue(), (<%- propertyType(property) %>) <%- defaultValueJava(property) %>);
-      }
+      // Set and Get
+      layer.setProperties(<%- camelizeWithLeadingLowercase(property.name) %>(<%- defaultValueJava(property) %>));
+      assertEquals((<%- propertyType(property) %>) layer.get<%- camelize(property.name) %>().getValue(), (<%- propertyType(property) %>) <%- defaultValueJava(property) %>);
     });
   }
-<% if (supportsZoomFunction(property)) { -%>
+<% if (isDataDriven(property)) { -%>
+<% if (!(property.name.endsWith("-font")||property.name.endsWith("-offset"))) { -%>
 
   @Test
-  public void test<%- camelize(property.name) %>AsCameraFunction() {
+  public void test<%- camelize(property.name) %>AsExpression() {
     validateTestSetup();
     setupLayer();
-    Timber.i("<%- property.name %>");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          <%- camelizeWithLeadingLowercase(property.name) %>(
-            zoom(
-<% if (property.function == 'piecewise-constant') { -%>
-              interval(
-                stop(2, <%- camelizeWithLeadingLowercase(property.name) %>(<%- defaultValueJava(property) %>))
-              )
-<% } else { -%>
-              exponential(
-                stop(2, <%- camelizeWithLeadingLowercase(property.name) %>(<%- defaultValueJava(property) %>))
-              ).withBase(0.5f)
-<% } -%>
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.get<%- camelize(property.name) %>());
-        assertNotNull(layer.get<%- camelize(property.name) %>().getFunction());
-        assertEquals(CameraFunction.class, layer.get<%- camelize(property.name) %>().getFunction().getClass());
-<% if (property.function == 'piecewise-constant') { -%>
-        assertEquals(IntervalStops.class, layer.get<%- camelize(property.name) %>().getFunction().getStops().getClass());
-        assertEquals(1, ((IntervalStops) layer.get<%- camelize(property.name) %>().getFunction().getStops()).size());
-<% } else { -%>
-        assertEquals(ExponentialStops.class, layer.get<%- camelize(property.name) %>().getFunction().getStops().getClass());
-        assertEquals(0.5f, ((ExponentialStops) layer.get<%- camelize(property.name) %>().getFunction().getStops()).getBase(), 0.001);
-        assertEquals(1, ((ExponentialStops) layer.get<%- camelize(property.name) %>().getFunction().getStops()).size());
-<% } -%>
-      }
-    });
-  }
-<% } -%>
-<% if (supportsPropertyFunction(property)) { -%>
-
-  @Test
-  public void test<%- camelize(property.name) %>AsIdentitySourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("<%- property.name %>");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          <%- camelizeWithLeadingLowercase(property.name) %>(property("FeaturePropertyA", Stops.<<%- propertyType(property) %>>identity()))
-        );
-
-        // Verify
-        assertNotNull(layer.get<%- camelize(property.name) %>());
-        assertNotNull(layer.get<%- camelize(property.name) %>().getFunction());
-        assertEquals(SourceFunction.class, layer.get<%- camelize(property.name) %>().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.get<%- camelize(property.name) %>().getFunction()).getProperty());
-        assertEquals(IdentityStops.class, layer.get<%- camelize(property.name) %>().getFunction().getStops().getClass());
-      }
+    Timber.i("<%- property.name %>-expression");
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
+
+      // Set and Get
+      Expression expression = <%- defaultExpressionJava(property) %>(Expression.get("undefined"));
+      layer.setProperties(<%- camelizeWithLeadingLowercase(property.name) %>(expression));
+      assertEquals(layer.get<%- camelize(property.name) %>().getExpression(), expression);
     });
   }
-<% if (property.function == 'piecewise-constant') { -%>
-
-  @Test
-  public void test<%- camelize(property.name) %>AsIntervalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("<%- property.name %>");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
 
-        // Set
-        layer.setProperties(
-          <%- camelizeWithLeadingLowercase(property.name) %>(
-            property(
-              "FeaturePropertyA",
-              interval(
-<% if (property.type == 'color') { -%>
-                stop(Color.RED, <%- camelizeWithLeadingLowercase(property.name) %>(Color.RED))
-<% } else {-%>
-                stop(1, <%- camelizeWithLeadingLowercase(property.name) %>(<%- defaultValueJava(property) %>))
-              )
-<% } -%>
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.get<%- camelize(property.name) %>());
-        assertNotNull(layer.get<%- camelize(property.name) %>().getFunction());
-        assertEquals(SourceFunction.class, layer.get<%- camelize(property.name) %>().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.get<%- camelize(property.name) %>().getFunction()).getProperty());
-        assertEquals(IntervalStops.class, layer.get<%- camelize(property.name) %>().getFunction().getStops().getClass());
-      }
-    });
-  }
-<% } else if (property.type === 'array') { -%>
-
-  @Test
-  public void test<%- camelize(property.name) %>AsIntervalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("<%- property.name %>");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          <%- camelizeWithLeadingLowercase(property.name) %>(
-            property(
-              "FeaturePropertyA",
-              interval(
-<% if (property.type == 'color') { -%>
-                stop(Color.RED, <%- camelizeWithLeadingLowercase(property.name) %>(Color.RED))
-<% } else {-%>
-                stop(1, <%- camelizeWithLeadingLowercase(property.name) %>(<%- defaultValueJava(property) %>))
-<% } -%>
-              )
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.get<%- camelize(property.name) %>());
-        assertNotNull(layer.get<%- camelize(property.name) %>().getFunction());
-        assertEquals(SourceFunction.class, layer.get<%- camelize(property.name) %>().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.get<%- camelize(property.name) %>().getFunction()).getProperty());
-        assertEquals(IntervalStops.class, layer.get<%- camelize(property.name) %>().getFunction().getStops().getClass());
-      }
-    });
-  }
-<% } else { -%>
-
-  @Test
-  public void test<%- camelize(property.name) %>AsExponentialSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("<%- property.name %>");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          <%- camelizeWithLeadingLowercase(property.name) %>(
-            property(
-              "FeaturePropertyA",
-              exponential(
-<% if (property.type == 'color') { -%>
-                stop(Color.RED, <%- camelizeWithLeadingLowercase(property.name) %>(Color.RED))
-<% } else {-%>
-                stop(<%- defaultValueJava(property) %>, <%- camelizeWithLeadingLowercase(property.name) %>(<%- defaultValueJava(property) %>))
-<% } -%>
-              ).withBase(0.5f)
-            )
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.get<%- camelize(property.name) %>());
-        assertNotNull(layer.get<%- camelize(property.name) %>().getFunction());
-        assertEquals(SourceFunction.class, layer.get<%- camelize(property.name) %>().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.get<%- camelize(property.name) %>().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.get<%- camelize(property.name) %>().getFunction().getStops().getClass());
-      }
-    });
-  }
-
-  @Test
-  public void test<%- camelize(property.name) %>AsCategoricalSourceFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("<%- property.name %>");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          <%- camelizeWithLeadingLowercase(property.name) %>(
-            property(
-              "FeaturePropertyA",
-              categorical(
-<% if (property.type == 'color') { -%>
-                stop("valueA", <%- camelizeWithLeadingLowercase(property.name) %>(Color.RED))
-              )
-            ).withDefaultValue(<%- camelizeWithLeadingLowercase(property.name) %>(Color.GREEN))
-<% } else {-%>
-                stop(1.0f, <%- camelizeWithLeadingLowercase(property.name) %>(<%- defaultValueJava(property) %>))
-              )
-            ).withDefaultValue(<%- camelizeWithLeadingLowercase(property.name) %>(<%- defaultValueJava(property) %>))
-<% } -%>
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.get<%- camelize(property.name) %>());
-        assertNotNull(layer.get<%- camelize(property.name) %>().getFunction());
-        assertEquals(SourceFunction.class, layer.get<%- camelize(property.name) %>().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((SourceFunction) layer.get<%- camelize(property.name) %>().getFunction()).getProperty());
-        assertEquals(CategoricalStops.class, layer.get<%- camelize(property.name) %>().getFunction().getStops().getClass());
-        assertNotNull(((SourceFunction) layer.get<%- camelize(property.name) %>().getFunction()).getDefaultValue());
-        assertNotNull(((SourceFunction) layer.get<%- camelize(property.name) %>().getFunction()).getDefaultValue().getValue());
-<% if (property.type === 'color') { -%>
-        assertEquals(Color.GREEN, (int) ((SourceFunction) layer.get<%- camelize(property.name) %>().getFunction()).getDefaultValue().getColorInt());
-<% } else { -%>
-        assertEquals(<%- defaultValueJava(property) %>, ((SourceFunction) layer.get<%- camelize(property.name) %>().getFunction()).getDefaultValue().getValue());
-<% } -%>
-      }
-    });
-
-  }
-<% if (property.type !== 'color') { -%>
-
-  @Test
-  public void test<%- camelize(property.name) %>AsCompositeFunction() {
-    validateTestSetup();
-    setupLayer();
-    Timber.i("<%- property.name %>");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
-
-        // Set
-        layer.setProperties(
-          <%- camelizeWithLeadingLowercase(property.name) %>(
-            composite(
-              "FeaturePropertyA",
-              exponential(
-                stop(0, 0.3f, <%- camelizeWithLeadingLowercase(property.name) %>(0.9f))
-              ).withBase(0.5f)
-<% if (property.type == 'number') { -%>
-            ).withDefaultValue(<%- camelizeWithLeadingLowercase(property.name) %>(<%- defaultValueJava(property) %>))
-<% } else { -%>
-            )
-<% } -%>
-          )
-        );
-
-        // Verify
-        assertNotNull(layer.get<%- camelize(property.name) %>());
-        assertNotNull(layer.get<%- camelize(property.name) %>().getFunction());
-        assertEquals(CompositeFunction.class, layer.get<%- camelize(property.name) %>().getFunction().getClass());
-        assertEquals("FeaturePropertyA", ((CompositeFunction) layer.get<%- camelize(property.name) %>().getFunction()).getProperty());
-        assertEquals(ExponentialStops.class, layer.get<%- camelize(property.name) %>().getFunction().getStops().getClass());
-        assertEquals(1, ((ExponentialStops) layer.get<%- camelize(property.name) %>().getFunction().getStops()).size());
-
-        ExponentialStops<Stop.CompositeValue<Float, <%- propertyType(property) %>>, <%- propertyType(property) %>> stops =
-          (ExponentialStops<Stop.CompositeValue<Float, <%- propertyType(property) %>>, <%- propertyType(property) %>>) layer.get<%- camelize(property.name) %>().getFunction().getStops();
-        Stop<Stop.CompositeValue<Float, <%- propertyType(property) %>>, <%- propertyType(property) %>> stop = stops.iterator().next();
-        assertEquals(0f, stop.in.zoom, 0.001);
-        assertEquals(0.3f, stop.in.value, 0.001f);
-        assertEquals(0.9f, stop.out, 0.001f);
-      }
-    });
-  }
-<% } -%>
 <% } -%>
 <% } -%>
 <% if (property.type == 'color') { -%>
@@ -444,19 +157,15 @@ public class <%- camelize(type) %>LayerTest extends BaseActivityTest {
     validateTestSetup();
     setupLayer();
     Timber.i("<%- property.name %>");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(layer);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(layer);
 
-        // Set and Get
-        layer.setProperties(<%- camelizeWithLeadingLowercase(property.name) %>(Color.RED));
-        assertEquals(layer.get<%- camelize(property.name) %>AsInt(), Color.RED);
-      }
+      // Set and Get
+      layer.setProperties(<%- camelizeWithLeadingLowercase(property.name) %>(Color.RED));
+      assertEquals(layer.get<%- camelize(property.name) %>AsInt(), Color.RED);
     });
   }
 <% } -%>
 <% } -%>
 <% } -%>
-
-}
+}
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/light.junit.ejs b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/light.junit.ejs
index 2f22a8f3f0..96f23871c5 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/light.junit.ejs
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/light.junit.ejs
@@ -9,15 +9,12 @@ import android.support.test.espresso.ViewAction;
 import android.support.test.runner.AndroidJUnit4;
 import android.view.View;
 
-import com.mapbox.mapboxsdk.maps.MapboxMap;
 import com.mapbox.mapboxsdk.style.light.Light;
-import com.mapbox.mapboxsdk.style.functions.Function;
-import com.mapbox.mapboxsdk.style.functions.stops.IdentityStops;
+import com.mapbox.mapboxsdk.style.expressions.Expression;
 import com.mapbox.mapboxsdk.style.layers.FillExtrusionLayer;
 import com.mapbox.mapboxsdk.style.layers.TransitionOptions;
 import com.mapbox.mapboxsdk.style.light.Position;
 import com.mapbox.mapboxsdk.testapp.R;
-import com.mapbox.mapboxsdk.testapp.action.MapboxMapAction;
 import com.mapbox.mapboxsdk.testapp.activity.BaseActivityTest;
 import com.mapbox.mapboxsdk.testapp.activity.style.FillExtrusionStyleTestActivity;
 
@@ -53,15 +50,12 @@ public class LightTest extends BaseActivityTest {
     validateTestSetup();
     setupLight();
     Timber.i("<%- property.name %>TransitionOptions");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(light);
-        // Set and Get
-        TransitionOptions options = new TransitionOptions(300, 100);
-        light.set<%- camelize(property.name) %>Transition(options);
-        assertEquals("Transition options should match", options, light.get<%- camelize(property.name) %>Transition());
-      }
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(light);
+      // Set and Get
+      TransitionOptions options = new TransitionOptions(300, 100);
+      light.set<%- camelize(property.name) %>Transition(options);
+      assertEquals("Transition options should match", options, light.get<%- camelize(property.name) %>Transition());
     });
   }
 <% } -%>
@@ -72,15 +66,12 @@ public class LightTest extends BaseActivityTest {
     validateTestSetup();
     setupLight();
     Timber.i("<%- property.name %>");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(light);
-        // Set and Get
-        Position position = new Position(1, 2, 3);
-        light.set<%- camelize(property.name) %>(position);
-        assertEquals("Position should match", position, light.get<%- camelize(property.name) %>());
-      }
+    invoke(mapboxMap,(uiController, mapboxMap) -> {
+      assertNotNull(light);
+      // Set and Get
+      Position position = new Position(1, 2, 3);
+      light.set<%- camelize(property.name) %>(position);
+      assertEquals("Position should match", position, light.get<%- camelize(property.name) %>());
     });
   }
 <% } else { -%>
@@ -90,18 +81,15 @@ public class LightTest extends BaseActivityTest {
     validateTestSetup();
     setupLight();
     Timber.i("<%- property.name %>");
-    invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
-      @Override
-      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
-        assertNotNull(light);
-        // Set and Get
-        light.set<%- camelize(property.name) %>(<%- defaultValueJava(property) %>);
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      assertNotNull(light);
+      // Set and Get
+      light.set<%- camelize(property.name) %>(<%- defaultValueJava(property) %>);
 <% if (property.name == 'color') { -%>
-        assertEquals("<%- camelize(property.name) %> should match", <%- defaultValueJava(property) %>.replaceAll("\\s+", ""), light.get<%- camelize(property.name) %>());
+      assertEquals("<%- camelize(property.name) %> should match", <%- defaultValueJava(property) %>.replaceAll("\\s+", ""), light.get<%- camelize(property.name) %>());
 <% } else { -%>
-        assertEquals("<%- camelize(property.name) %> should match", <%- defaultValueJava(property) %>, light.get<%- camelize(property.name) %>());
+      assertEquals("<%- camelize(property.name) %> should match", <%- defaultValueJava(property) %>, light.get<%- camelize(property.name) %>());
 <% } -%>
-      }
     });
   }
 <% } -%>
@@ -128,8 +116,8 @@ public class LightTest extends BaseActivityTest {
         fillExtrusionLayer.setMinZoom(15);
         fillExtrusionLayer.setProperties(
           fillExtrusionColor(Color.LTGRAY),
-          fillExtrusionHeight(Function.property("height", new IdentityStops<Float>())),
-          fillExtrusionBase(Function.property("min_height", new IdentityStops<Float>())),
+          fillExtrusionHeight(Expression.get("height")),
+          fillExtrusionBase(Expression.get("min_height")),
           fillExtrusionOpacity(0.6f)
         );
         mapboxMap.addLayer(fillExtrusionLayer);
@@ -141,4 +129,4 @@ public class LightTest extends BaseActivityTest {
   protected Class getActivityClass() {
     return FillExtrusionStyleTestActivity.class;
   }
-}
+}
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/BuildingFillExtrusionActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/BuildingFillExtrusionActivity.java
index 609910892b..c86e995956 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/BuildingFillExtrusionActivity.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/BuildingFillExtrusionActivity.java
@@ -8,8 +8,7 @@ import android.view.MenuItem;
 
 import com.mapbox.mapboxsdk.maps.MapView;
 import com.mapbox.mapboxsdk.maps.MapboxMap;
-import com.mapbox.mapboxsdk.style.functions.Function;
-import com.mapbox.mapboxsdk.style.functions.stops.IdentityStops;
+import com.mapbox.mapboxsdk.style.expressions.Expression;
 import com.mapbox.mapboxsdk.style.layers.FillExtrusionLayer;
 import com.mapbox.mapboxsdk.style.layers.Property;
 import com.mapbox.mapboxsdk.style.layers.PropertyFactory;
@@ -57,8 +56,8 @@ public class BuildingFillExtrusionActivity extends AppCompatActivity {
     fillExtrusionLayer.setMinZoom(15);
     fillExtrusionLayer.setProperties(
       fillExtrusionColor(Color.LTGRAY),
-      fillExtrusionHeight(Function.property("height", new IdentityStops<Float>())),
-      fillExtrusionBase(Function.property("min_height", new IdentityStops<Float>())),
+      fillExtrusionHeight(Expression.get("height")),
+      fillExtrusionBase(Expression.get("min_height")),
       fillExtrusionOpacity(0.9f)
     );
     mapboxMap.addLayer(fillExtrusionLayer);
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/DataDrivenStyleActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/DataDrivenStyleActivity.java
index cbac62bcc1..eebe95a411 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/DataDrivenStyleActivity.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/DataDrivenStyleActivity.java
@@ -1,6 +1,5 @@
 package com.mapbox.mapboxsdk.testapp.activity.style;
 
-import android.graphics.Color;
 import android.os.Bundle;
 import android.support.v7.app.AppCompatActivity;
 import android.view.Menu;
@@ -23,13 +22,14 @@ import java.io.IOException;
 
 import timber.log.Timber;
 
-import static com.mapbox.mapboxsdk.style.expressions.Expression.color;
 import static com.mapbox.mapboxsdk.style.expressions.Expression.exponential;
 import static com.mapbox.mapboxsdk.style.expressions.Expression.get;
 import static com.mapbox.mapboxsdk.style.expressions.Expression.interpolate;
 import static com.mapbox.mapboxsdk.style.expressions.Expression.linear;
 import static com.mapbox.mapboxsdk.style.expressions.Expression.literal;
 import static com.mapbox.mapboxsdk.style.expressions.Expression.match;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.rgb;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.rgba;
 import static com.mapbox.mapboxsdk.style.expressions.Expression.step;
 import static com.mapbox.mapboxsdk.style.expressions.Expression.stop;
 import static com.mapbox.mapboxsdk.style.expressions.Expression.zoom;
@@ -165,7 +165,6 @@ public class DataDrivenStyleActivity extends AppCompatActivity {
     }
   }
 
-
   private void addExponentialZoomFunction() {
     Timber.i("Add exponential zoom function");
     FillLayer layer = mapboxMap.getLayerAs("water");
@@ -174,9 +173,9 @@ public class DataDrivenStyleActivity extends AppCompatActivity {
       fillColor(
         interpolate(
           exponential(0.5f), zoom(),
-          stop(1, color(Color.RED)),
-          stop(5, color(Color.BLUE)),
-          stop(10, color(Color.GREEN))
+          stop(1, rgb(255, 0, 0)),
+          stop(5, rgb(0, 0, 255)),
+          stop(10, rgb(0, 255, 0))
         )
       )
     );
@@ -191,10 +190,10 @@ public class DataDrivenStyleActivity extends AppCompatActivity {
     layer.setProperties(
       fillColor(
         step(zoom(),
-          color(Color.CYAN),
-          stop(1, color(Color.RED)),
-          stop(5, color(Color.BLUE)),
-          stop(10, color(Color.GREEN))
+          rgba(0.0f, 255.0f, 255.0f, 1.0f),
+          stop(1, rgba(255.0f, 0.0f, 0.0f, 1.0f)),
+          stop(5, rgba(0.0f, 0.0f, 255.0f, 1.0f)),
+          stop(10, rgba(0.0f, 255.0f, 0.0f, 1.0f))
         )
       )
     );
@@ -211,9 +210,9 @@ public class DataDrivenStyleActivity extends AppCompatActivity {
         interpolate(
           exponential(0.5f),
           get("stroke-width"),
-          stop(1f, color(Color.RED)),
-          stop(5f, color(Color.BLUE)),
-          stop(10f, color(Color.GREEN))
+          stop(1f, rgba(255.0f, 0.0f, 0.0f, 1.0f)),
+          stop(5f, rgba(0.0f, 0.0f, 255.0f, 1.0f)),
+          stop(10f, rgba(0.0f, 255.0f, 0.0f, 1.0f))
         )
       )
     );
@@ -229,10 +228,10 @@ public class DataDrivenStyleActivity extends AppCompatActivity {
       fillColor(
         match(
           get("name"),
-          literal("Westerpark"), color(Color.RED),
-          literal("Jordaan"), color(Color.BLUE),
-          literal("Prinseneiland"), color(Color.GREEN),
-          color(Color.CYAN)
+          literal("Westerpark"), rgba(255.0f, 0.0f, 0.0f, 1.0f),
+          literal("Jordaan"), rgba(0.0f, 0.0f, 255.0f, 1.0f),
+          literal("Prinseneiland"), rgba(0.0f, 255.0f, 0.0f, 1.0f),
+          rgba(0.0f, 255.0f, 255.0f, 1.0f)
         )
       )
     );
@@ -261,10 +260,10 @@ public class DataDrivenStyleActivity extends AppCompatActivity {
       fillColor(
         step(
           get("stroke-width"),
-          color(Color.CYAN),
-          stop(1f, color(Color.RED)),
-          stop(2f, color(Color.BLUE)),
-          stop(3f, color(Color.GREEN))
+          rgba(0.0f, 255.0f, 255.0f, 1.0f),
+          stop(1f, rgba(255.0f, 0.0f, 0.0f, 1.0f)),
+          stop(2f, rgba(0.0f, 0.0f, 255.0f, 1.0f)),
+          stop(3f, rgba(0.0f, 255.0f, 0.0f, 1.0f))
         )
       )
     );
@@ -283,24 +282,24 @@ public class DataDrivenStyleActivity extends AppCompatActivity {
           zoom(),
           stop(12, step(
             get("stroke-width"),
-            color(Color.BLACK),
-            stop(1f, color(Color.RED)),
-            stop(2f, color(Color.WHITE)),
-            stop(3f, color(Color.BLUE))
+            rgba(255.0f, 255.0f, 255.0f, 1.0f),
+            stop(1f, rgba(255.0f, 0.0f, 0.0f, 1.0f)),
+            stop(2f, rgba(0.0f, 0.0f, 0.0f, 1.0f)),
+            stop(3f, rgba(0.0f, 0.0f, 255.0f, 1.0f))
           )),
           stop(15, step(
             get("stroke-width"),
-            color(Color.BLACK),
-            stop(1f, color(Color.YELLOW)),
-            stop(2f, color(Color.LTGRAY)),
-            stop(3f, color(Color.CYAN))
+            rgba(255.0f, 255.0f, 255.0f, 1.0f),
+            stop(1f, rgba(255.0f, 255.0f, 0.0f, 1.0f)),
+            stop(2f, rgba(211.0f, 211.0f, 211.0f, 1.0f)),
+            stop(3f, rgba(0.0f, 255.0f, 255.0f, 1.0f))
           )),
           stop(18, step(
             get("stroke-width"),
-            color(Color.BLACK),
-            stop(1f, color(Color.WHITE)),
-            stop(2f, color(Color.GRAY)),
-            stop(3f, color(Color.GREEN)))
+            rgba(255.0f, 255.0f, 255.0f, 1.0f),
+            stop(1f, rgba(0.0f, 0.0f, 0.0f, 1.0f)),
+            stop(2f, rgba(128.0f, 128.0f, 128.0f, 1.0f)),
+            stop(3f, rgba(0.0f, 255.0f, 0.0f, 1.0f)))
           )
         )
       )
@@ -320,24 +319,24 @@ public class DataDrivenStyleActivity extends AppCompatActivity {
           zoom(),
           stop(12, step(
             get("stroke-width"),
-            color(Color.BLACK),
-            stop(1f, color(Color.RED)),
-            stop(2f, color(Color.WHITE)),
-            stop(3f, color(Color.BLUE))
+            rgba(255.0f, 255.0f, 255.0f, 1.0f),
+            stop(1f, rgba(255.0f, 0.0f, 0.0f, 1.0f)),
+            stop(2f, rgba(0.0f, 0.0f, 0.0f, 1.0f)),
+            stop(3f, rgba(0.0f, 0.0f, 255.0f, 1.0f))
           )),
           stop(15, step(
             get("stroke-width"),
-            color(Color.BLACK),
-            stop(1f, color(Color.YELLOW)),
-            stop(2f, color(Color.LTGRAY)),
-            stop(3f, color(Color.CYAN))
+            rgba(255.0f, 255.0f, 255.0f, 1.0f),
+            stop(1f, rgba(255.0f, 255.0f, 0.0f, 1.0f)),
+            stop(2f, rgba(211.0f, 211.0f, 211.0f, 1.0f)),
+            stop(3f, rgba(0.0f, 255.0f, 255.0f, 1.0f))
           )),
           stop(18, step(
             get("stroke-width"),
-            color(Color.BLACK),
-            stop(1f, color(Color.WHITE)),
-            stop(2f, color(Color.GRAY)),
-            stop(3f, color(Color.GREEN))
+            rgba(255.0f, 255.0f, 255.0f, 1.0f),
+            stop(1f, rgba(0.0f, 0.0f, 0.0f, 1.0f)),
+            stop(2f, rgba(128.0f, 128.0f, 128.0f, 1.0f)),
+            stop(3f, rgba(0.0f, 255.0f, 0.0f, 1.0f))
           ))
         )
       )
@@ -353,89 +352,89 @@ public class DataDrivenStyleActivity extends AppCompatActivity {
     layer.setProperties(
       fillColor(
         step(zoom(),
-          color(Color.BLACK),
+          rgba(255.0f, 255.0f, 255.0f, 1.0f),
           stop(7f, match(
             get("name"),
-            literal("Westerpark"), color(Color.RED),
-            color(Color.BLACK)
+            literal("Westerpark"), rgba(255.0f, 0.0f, 0.0f, 1.0f),
+            rgba(255.0f, 255.0f, 255.0f, 1.0f)
           )),
           stop(8f, match(
             get("name"),
-            literal("Westerpark"), color(Color.BLUE),
-            color(Color.BLACK)
+            literal("Westerpark"), rgba(0.0f, 0.0f, 255.0f, 1.0f),
+            rgba(255.0f, 255.0f, 255.0f, 1.0f)
           )),
           stop(9f, match(
             get("name"),
-            literal("Westerpark"), color(Color.RED),
-            color(Color.BLACK)
+            literal("Westerpark"), rgba(255.0f, 0.0f, 0.0f, 1.0f),
+            rgba(255.0f, 255.0f, 255.0f, 1.0f)
           )),
           stop(10f, match(
             get("name"),
-            literal("Westerpark"), color(Color.BLUE),
-            color(Color.BLACK)
+            literal("Westerpark"), rgba(0.0f, 0.0f, 255.0f, 1.0f),
+            rgba(255.0f, 255.0f, 255.0f, 1.0f)
           )),
           stop(11f, match(
             get("name"),
-            literal("Westerpark"), color(Color.RED),
-            color(Color.BLACK)
+            literal("Westerpark"), rgba(255.0f, 0.0f, 0.0f, 1.0f),
+            rgba(255.0f, 255.0f, 255.0f, 1.0f)
           )),
           stop(12f, match(
             get("name"),
-            literal("Westerpark"), color(Color.BLUE),
-            color(Color.BLACK)
+            literal("Westerpark"), rgba(0.0f, 0.0f, 255.0f, 1.0f),
+            rgba(255.0f, 255.0f, 255.0f, 1.0f)
           )),
           stop(13f, match(
             get("name"),
-            literal("Westerpark"), color(Color.RED),
-            color(Color.BLACK)
+            literal("Westerpark"), rgba(255.0f, 0.0f, 0.0f, 1.0f),
+            rgba(255.0f, 255.0f, 255.0f, 1.0f)
           )),
           stop(14f, match(
             get("name"),
-            literal("Westerpark"), color(Color.BLUE),
-            literal("Jordaan"), color(Color.GREEN),
-            literal("PrinsenEiland"), color(Color.WHITE),
-            color(Color.BLACK)
+            literal("Westerpark"), rgba(0.0f, 0.0f, 255.0f, 1.0f),
+            literal("Jordaan"), rgba(0.0f, 255.0f, 0.0f, 1.0f),
+            literal("PrinsenEiland"), rgba(0.0f, 0.0f, 0.0f, 1.0f),
+            rgba(255.0f, 255.0f, 255.0f, 1.0f)
           )),
           stop(15f, match(
             get("name"),
-            literal("Westerpark"), color(Color.RED),
-            color(Color.BLACK)
+            literal("Westerpark"), rgba(255.0f, 0.0f, 0.0f, 1.0f),
+            rgba(255.0f, 255.0f, 255.0f, 1.0f)
           )),
           stop(16f, match(
             get("name"),
-            literal("Westerpark"), color(Color.BLUE),
-            color(Color.BLACK)
+            literal("Westerpark"), rgba(0.0f, 0.0f, 255.0f, 1.0f),
+            rgba(255.0f, 255.0f, 255.0f, 1.0f)
           )),
           stop(17f, match(
             get("name"),
-            literal("Westerpark"), color(Color.RED),
-            color(Color.BLACK)
+            literal("Westerpark"), rgba(255.0f, 0.0f, 0.0f, 1.0f),
+            rgba(255.0f, 255.0f, 255.0f, 1.0f)
           )),
           stop(18f, match(
             get("name"),
-            literal("Westerpark"), color(Color.BLUE),
-            literal("Jordaan"), color(Color.CYAN),
-            color(Color.BLACK)
+            literal("Westerpark"), rgba(0.0f, 0.0f, 255.0f, 1.0f),
+            literal("Jordaan"), rgba(0.0f, 255.0f, 255.0f, 1.0f),
+            rgba(255.0f, 255.0f, 255.0f, 1.0f)
           )),
           stop(19f, match(
             get("name"),
-            literal("Westerpark"), color(Color.RED),
-            color(Color.BLACK)
+            literal("Westerpark"), rgba(255.0f, 0.0f, 0.0f, 1.0f),
+            rgba(255.0f, 255.0f, 255.0f, 1.0f)
           )),
           stop(20f, match(
             get("name"),
-            literal("Westerpark"), color(Color.BLUE),
-            color(Color.BLACK)
+            literal("Westerpark"), rgba(0.0f, 0.0f, 255.0f, 1.0f),
+            rgba(255.0f, 255.0f, 255.0f, 1.0f)
           )),
           stop(21f, match(
             get("name"),
-            literal("Westerpark"), color(Color.RED),
-            color(Color.BLACK)
+            literal("Westerpark"), rgba(255.0f, 0.0f, 0.0f, 1.0f),
+            rgba(255.0f, 255.0f, 255.0f, 1.0f)
           )),
           stop(22f, match(
             get("name"),
-            literal("Westerpark"), color(Color.BLUE),
-            color(Color.BLACK)
+            literal("Westerpark"), rgba(0.0f, 0.0f, 255.0f, 1.0f),
+            rgba(255.0f, 255.0f, 255.0f, 1.0f)
           ))
         )
       )
@@ -461,8 +460,8 @@ public class DataDrivenStyleActivity extends AppCompatActivity {
     // Add a fill layer
     mapboxMap.addLayer(new FillLayer(AMSTERDAM_PARKS_LAYER, source.getId())
       .withProperties(
-        fillColor(Color.BLACK),
-        fillOutlineColor(Color.BLUE),
+        fillColor(rgba(0.0f, 0.0f, 0.0f, 0.5f)),
+        fillOutlineColor(rgb(0, 0, 255)),
         fillAntialias(true)
       )
     );
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/SymbolGeneratorActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/SymbolGeneratorActivity.java
index ca4176be6e..5a30d9ce30 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/SymbolGeneratorActivity.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/SymbolGeneratorActivity.java
@@ -20,6 +20,7 @@ import com.mapbox.geojson.FeatureCollection;
 import com.mapbox.mapboxsdk.maps.MapView;
 import com.mapbox.mapboxsdk.maps.MapboxMap;
 import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
+import com.mapbox.mapboxsdk.style.expressions.Expression;
 import com.mapbox.mapboxsdk.style.layers.Filter;
 import com.mapbox.mapboxsdk.style.layers.SymbolLayer;
 import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
@@ -27,8 +28,8 @@ import com.mapbox.mapboxsdk.style.sources.Source;
 import com.mapbox.mapboxsdk.testapp.R;
 import com.mapbox.mapboxsdk.testapp.utils.ResourceUtils;
 
-
 import java.io.IOException;
+import java.lang.ref.WeakReference;
 import java.util.HashMap;
 import java.util.List;
 
@@ -39,8 +40,12 @@ import static com.mapbox.mapboxsdk.style.expressions.Expression.division;
 import static com.mapbox.mapboxsdk.style.expressions.Expression.downcase;
 import static com.mapbox.mapboxsdk.style.expressions.Expression.get;
 import static com.mapbox.mapboxsdk.style.expressions.Expression.literal;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.match;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.number;
 import static com.mapbox.mapboxsdk.style.expressions.Expression.pi;
 import static com.mapbox.mapboxsdk.style.expressions.Expression.product;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.rgba;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.string;
 import static com.mapbox.mapboxsdk.style.expressions.Expression.upcase;
 import static com.mapbox.mapboxsdk.style.layers.Property.ICON_ANCHOR_BOTTOM;
 import static com.mapbox.mapboxsdk.style.layers.Property.TEXT_ANCHOR_TOP;
@@ -50,6 +55,7 @@ import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconImage;
 import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconOffset;
 import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconSize;
 import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.textAnchor;
+import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.textColor;
 import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.textField;
 import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.textSize;
 
@@ -196,27 +202,32 @@ public class SymbolGeneratorActivity extends AppCompatActivity implements OnMapR
 
   private static class LoadDataTask extends AsyncTask<Void, Void, FeatureCollection> {
 
-    private SymbolGeneratorActivity activity;
+    private WeakReference<SymbolGeneratorActivity> activity;
 
     LoadDataTask(SymbolGeneratorActivity activity) {
-      this.activity = activity;
+      this.activity = new WeakReference<>(activity);
     }
 
     @Override
     protected FeatureCollection doInBackground(Void... params) {
-      try {
-        // read local geojson from raw folder
-        String tinyCountriesJson = ResourceUtils.readRawResource(activity, R.raw.tiny_countries);
-        return FeatureCollection.fromJson(tinyCountriesJson);
-
-      } catch (IOException exception) {
-        return null;
+      Context context = activity.get();
+      if (context != null) {
+        try {
+          // read local geojson from raw folder
+          String tinyCountriesJson = ResourceUtils.readRawResource(context, R.raw.tiny_countries);
+          return FeatureCollection.fromJson(tinyCountriesJson);
+
+        } catch (IOException exception) {
+          Timber.e(exception);
+        }
       }
+      return null;
     }
 
     @Override
     protected void onPostExecute(FeatureCollection featureCollection) {
       super.onPostExecute(featureCollection);
+      SymbolGeneratorActivity activity = this.activity.get();
       if (featureCollection == null || activity == null) {
         return;
       }
@@ -226,37 +237,64 @@ public class SymbolGeneratorActivity extends AppCompatActivity implements OnMapR
   }
 
   public void onDataLoaded(@NonNull FeatureCollection featureCollection) {
-    // add a geojson to the map
-    Source source = new GeoJsonSource(SOURCE_ID, featureCollection);
-    mapboxMap.addSource(source);
+    // create expressions
+    Expression iconImageExpression = string(get(literal(FEATURE_ID)));
+    Expression iconSizeExpression = division(number(get(literal(FEATURE_RANK))), literal(2.0f));
+    Expression textSizeExpression = product(get(literal(FEATURE_RANK)), pi());
+    Expression textFieldExpression = concat(upcase(literal("a ")), upcase(string(get(literal(FEATURE_TYPE)))),
+      downcase(literal(" IN ")), string(get(literal(FEATURE_REGION)))
+    );
+    Expression textColorExpression = match(get(literal(FEATURE_RANK)),
+      literal(1), rgba(255, 0, 0, 1.0f),
+      literal(2), rgba(0, 0, 255.0f, 1.0f),
+      rgba(0.0f, 255.0f, 0.0f, 1.0f)
+    );
 
-    // create layer use
-    mapboxMap.addLayer(new SymbolLayer(LAYER_ID, SOURCE_ID)
-      .withProperties(
+    rgba(
+      division(literal(255), get(FEATURE_RANK)),
+      literal(0.0f),
+      literal(0.0f),
+      literal(1.0f)
+    );
 
+    // create symbol layer
+    SymbolLayer symbolLayer = new SymbolLayer(LAYER_ID, SOURCE_ID)
+      .withProperties(
         // icon configuration
-        iconImage(get(literal(FEATURE_ID))),
+        iconImage(iconImageExpression),
         iconAllowOverlap(false),
-        iconSize(
-          division(get(literal(FEATURE_RANK)), literal(2))
-        ),
+        iconSize(iconSizeExpression),
         iconAnchor(ICON_ANCHOR_BOTTOM),
         iconOffset(new Float[] {0.0f, -5.0f}),
 
         // text field configuration
-        textField(
-          concat(
-            upcase(literal("a ")),
-            get(literal(FEATURE_TYPE)),
-            downcase(literal(" IN ")),
-            get(literal(FEATURE_REGION))
-          )
-        ),
-        textSize(
-          product(get(literal(FEATURE_RANK)), pi())
-        ),
-        textAnchor(TEXT_ANCHOR_TOP)
-      )
+        textField(textFieldExpression),
+        textSize(textSizeExpression),
+        textAnchor(TEXT_ANCHOR_TOP),
+        textColor(textColorExpression)
+      );
+
+    // add a geojson source to the map
+    Source source = new GeoJsonSource(SOURCE_ID, featureCollection);
+    mapboxMap.addSource(source);
+
+    // add symbol layer
+    mapboxMap.addLayer(symbolLayer);
+
+    // get expressions
+    Expression iconImageExpressionResult = symbolLayer.getIconImage().getExpression();
+    Expression iconSizeExpressionResult = symbolLayer.getIconSize().getExpression();
+    Expression textSizeExpressionResult = symbolLayer.getTextSize().getExpression();
+    Expression textFieldExpressionResult = symbolLayer.getTextField().getExpression();
+    Expression textColorExpressionResult = symbolLayer.getTextColor().getExpression();
+
+    // reset expressions
+    symbolLayer.setProperties(
+      iconImage(iconImageExpressionResult),
+      iconSize(iconSizeExpressionResult),
+      textSize(textSizeExpressionResult),
+      textField(textFieldExpressionResult),
+      textColor(textColorExpressionResult)
     );
 
     new GenerateSymbolTask(mapboxMap, this).execute(featureCollection);
@@ -265,27 +303,29 @@ public class SymbolGeneratorActivity extends AppCompatActivity implements OnMapR
   private static class GenerateSymbolTask extends AsyncTask<FeatureCollection, Void, HashMap<String, Bitmap>> {
 
     private MapboxMap mapboxMap;
-    private Context context;
+    private WeakReference<Context> context;
 
     GenerateSymbolTask(MapboxMap mapboxMap, Context context) {
       this.mapboxMap = mapboxMap;
-      this.context = context;
+      this.context = new WeakReference<>(context);
     }
 
     @SuppressWarnings("WrongThread")
     @Override
     protected HashMap<String, Bitmap> doInBackground(FeatureCollection... params) {
-      FeatureCollection featureCollection = params[0];
-
       HashMap<String, Bitmap> imagesMap = new HashMap<>();
-      for (Feature feature : featureCollection.features()) {
-        String countryName = feature.getStringProperty(FEATURE_ID);
-        TextView textView = new TextView(context);
-        textView.setBackgroundColor(context.getResources().getColor(R.color.blueAccent));
-        textView.setPadding(10, 5, 10, 5);
-        textView.setTextColor(Color.WHITE);
-        textView.setText(countryName);
-        imagesMap.put(countryName, SymbolGenerator.generate(textView));
+      Context context = this.context.get();
+      List<Feature> features = params[0].features();
+      if (context != null && features != null) {
+        for (Feature feature : features) {
+          String countryName = feature.getStringProperty(FEATURE_ID);
+          TextView textView = new TextView(context);
+          textView.setBackgroundColor(context.getResources().getColor(R.color.blueAccent));
+          textView.setPadding(10, 5, 10, 5);
+          textView.setTextColor(Color.WHITE);
+          textView.setText(countryName);
+          imagesMap.put(countryName, SymbolGenerator.generate(textView));
+        }
       }
       return imagesMap;
     }
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/ZoomFunctionSymbolLayerActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/ZoomFunctionSymbolLayerActivity.java
index 180e2e726a..df06c9c42d 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/ZoomFunctionSymbolLayerActivity.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/ZoomFunctionSymbolLayerActivity.java
@@ -22,11 +22,13 @@ import java.util.List;
 
 import timber.log.Timber;
 
-import static com.mapbox.mapboxsdk.style.functions.Function.property;
-import static com.mapbox.mapboxsdk.style.functions.Function.zoom;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stop.stop;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stops.categorical;
-import static com.mapbox.mapboxsdk.style.functions.stops.Stops.interval;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.get;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.interpolate;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.linear;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.literal;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.stop;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.switchCase;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.zoom;
 import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconAllowOverlap;
 import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconImage;
 import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconSize;
@@ -101,20 +103,16 @@ public class ZoomFunctionSymbolLayerActivity extends AppCompatActivity {
     layer = new SymbolLayer(LAYER_ID, SOURCE_ID);
     layer.setProperties(
       iconImage(
-        zoom(
-          interval(
-            stop(ZOOM_STOP_MIN_VALUE, iconImage(BUS_MAKI_ICON_ID)),
-            stop(ZOOM_STOP_MAX_VALUE, iconImage(CAFE_MAKI_ICON_ID))
-          )
-        )
+         interpolate(
+           linear(), zoom(),
+           stop(ZOOM_STOP_MIN_VALUE, BUS_MAKI_ICON_ID),
+           stop(ZOOM_STOP_MAX_VALUE, CAFE_MAKI_ICON_ID)
+         )
       ),
       iconSize(
-        property(
-          KEY_PROPERTY_SELECTED,
-          categorical(
-            stop(true, iconSize(3.0f)),
-            stop(false, iconSize(1.0f))
-          )
+        switchCase(
+          get(KEY_PROPERTY_SELECTED), literal(3.0f),
+          literal(1.0f)
         )
       ),
       iconAllowOverlap(true)
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/utils/ResourceUtils.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/utils/ResourceUtils.java
index f0cca57e10..b61f9c4579 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/utils/ResourceUtils.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/utils/ResourceUtils.java
@@ -16,17 +16,14 @@ public class ResourceUtils {
   public static String readRawResource(Context context, @RawRes int rawResource) throws IOException {
     String json = "";
     if (context != null) {
-      InputStream is = context.getResources().openRawResource(rawResource);
       Writer writer = new StringWriter();
       char[] buffer = new char[1024];
-      try {
+      try (InputStream is = context.getResources().openRawResource(rawResource)) {
         Reader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
         int numRead;
         while ((numRead = reader.read(buffer)) != -1) {
           writer.write(buffer, 0, numRead);
         }
-      } finally {
-        is.close();
       }
       json = writer.toString();
     }
diff --git a/platform/android/config.cmake b/platform/android/config.cmake
index 30182bbc06..2694068dac 100644
--- a/platform/android/config.cmake
+++ b/platform/android/config.cmake
@@ -131,6 +131,7 @@ add_library(mbgl-android STATIC
     platform/android/src/conversion/constant.hpp
     platform/android/src/conversion/conversion.hpp
     platform/android/src/style/conversion/function.hpp
+    platform/android/src/style/conversion/gson.hpp
     platform/android/src/style/conversion/property_value.hpp
     platform/android/src/style/conversion/types.hpp
     platform/android/src/style/conversion/types_string_values.hpp
@@ -190,16 +191,6 @@ add_library(mbgl-android STATIC
     platform/android/src/style/sources/image_source.cpp
     platform/android/src/style/sources/raster_dem_source.cpp
     platform/android/src/style/sources/raster_dem_source.hpp
-    platform/android/src/style/functions/stop.cpp
-    platform/android/src/style/functions/stop.hpp
-    platform/android/src/style/functions/categorical_stops.cpp
-    platform/android/src/style/functions/categorical_stops.hpp
-    platform/android/src/style/functions/exponential_stops.cpp
-    platform/android/src/style/functions/exponential_stops.hpp
-    platform/android/src/style/functions/identity_stops.cpp
-    platform/android/src/style/functions/identity_stops.hpp
-    platform/android/src/style/functions/interval_stops.cpp
-    platform/android/src/style/functions/interval_stops.hpp
     platform/android/src/style/position.cpp
     platform/android/src/style/position.hpp
     platform/android/src/style/light.cpp
diff --git a/platform/android/scripts/generate-style-code.js b/platform/android/scripts/generate-style-code.js
index 406364c1d7..3b0363cc19 100755
--- a/platform/android/scripts/generate-style-code.js
+++ b/platform/android/scripts/generate-style-code.js
@@ -149,6 +149,24 @@ global.propertyTypeAnnotation = function propertyTypeAnnotation(property) {
   }
 };
 
+global.defaultExpressionJava = function(property) {
+    switch (property.type) {
+      case 'boolean':
+        return 'boolean';
+      case 'number':
+        return 'number';
+      case 'string':
+        return "string";
+      case 'enum':
+        return "string";
+      case 'color':
+        return 'toColor';
+      case 'array':
+        return "array";
+      default: return "string";
+      }
+}
+
 global.defaultValueJava = function(property) {
     if(property.name.endsWith("-pattern")) {
         return '"pedestrian-polygon"';
diff --git a/platform/android/src/jni.cpp b/platform/android/src/jni.cpp
index c2fd1c95ad..68db977407 100755
--- a/platform/android/src/jni.cpp
+++ b/platform/android/src/jni.cpp
@@ -40,11 +40,6 @@
 #include "offline/offline_region_error.hpp"
 #include "offline/offline_region_status.hpp"
 #include "style/transition_options.hpp"
-#include "style/functions/categorical_stops.hpp"
-#include "style/functions/exponential_stops.hpp"
-#include "style/functions/identity_stops.hpp"
-#include "style/functions/interval_stops.hpp"
-#include "style/functions/stop.hpp"
 #include "style/layers/layers.hpp"
 #include "style/sources/source.hpp"
 #include "style/light.hpp"
@@ -163,11 +158,6 @@ void registerNatives(JavaVM *vm) {
     Source::registerNative(env);
     Light::registerNative(env);
     Position::registerNative(env);
-    Stop::registerNative(env);
-    CategoricalStops::registerNative(env);
-    ExponentialStops::registerNative(env);
-    IdentityStops::registerNative(env);
-    IntervalStops::registerNative(env);
 
     // Map
     CameraPosition::registerNative(env);
diff --git a/platform/android/src/style/conversion/function.hpp b/platform/android/src/style/conversion/function.hpp
index ad01a7afc2..510efd3c94 100644
--- a/platform/android/src/style/conversion/function.hpp
+++ b/platform/android/src/style/conversion/function.hpp
@@ -5,14 +5,9 @@
 #include "../../conversion/constant.hpp"
 #include "types.hpp"
 #include "../../java/lang.hpp"
-#include "../functions/stop.hpp"
-#include "../functions/categorical_stops.hpp"
-#include "../functions/exponential_stops.hpp"
-#include "../functions/identity_stops.hpp"
-#include "../functions/interval_stops.hpp"
 
 #include <jni/jni.hpp>
-
+#include "gson.hpp"
 #include <tuple>
 #include <map>
 
@@ -20,160 +15,16 @@ namespace mbgl {
 namespace android {
 namespace conversion {
 
-/**
- * Conversion from core composite value to java type
- */
-class CategoricalValueEvaluator {
-public:
-
-    CategoricalValueEvaluator(jni::JNIEnv& _env) : env(_env) {}
-
-    template <class T>
-    jni::jobject* operator()(const T &value) const {
-        return *convert<jni::jobject*, T>(env, value);
-    }
-
-private:
-    jni::JNIEnv& env;
-};
-
-/**
- * Conversion from core composite value to java type
- */
-template <>
-struct Converter<jni::jobject*, mbgl::style::CategoricalValue> {
-
-    Result<jni::jobject*> operator()(jni::JNIEnv& env, const mbgl::style::CategoricalValue& value) const {
-        CategoricalValueEvaluator evaluator(env);
-        return apply_visitor(evaluator, value);
-    }
-};
-
-template <class I, class O>
-jni::Array<jni::Object<Stop>> toFunctionStopJavaArray(jni::JNIEnv& env, std::map<I, O> value) {
-
-    auto jarray = jni::Array<jni::Object<Stop>>::New(env, value.size(), Stop::javaClass);
-
-    size_t i = 0;
-    for (auto const& stop : value) {
-        jni::jobject* in = *convert<jni::jobject*, I>(env, stop.first);
-        jni::jobject* out = *convert<jni::jobject*, O>(env, stop.second);
-
-        auto jstop = Stop::New(env, jni::Object<>(in), jni::Object<>(out));
-        jarray.Set(env, i, jstop);
-
-        jni::DeleteLocalRef(env, in);
-        jni::DeleteLocalRef(env, out);
-        jni::DeleteLocalRef(env, jstop);
-
-        i++;
-    }
-
-    return jarray;
-}
-
-template <class I, class O>
-jni::Array<jni::Object<Stop>> toFunctionStopJavaArray(jni::JNIEnv& env, std::map<float, std::map<I, O>> value) {
-
-    auto jarray = jni::Array<jni::Object<Stop>>::New(env, value.size(), Stop::javaClass);
-
-    for (auto const& zoomLevelMap : value) {
-        size_t i = 0;
-        for (auto const& stop: zoomLevelMap.second) {
-            auto zoom = jni::Object<java::lang::Number>(*convert<jni::jobject*>(env, zoomLevelMap.first));
-            auto in = jni::Object<>(*convert<jni::jobject*, I>(env, stop.first));
-            auto out = jni::Object<>(*convert<jni::jobject*, O>(env, stop.second));
-            auto compositeValue = Stop::CompositeValue::New(env, zoom, in);
-
-            auto jstop = Stop::New(env, compositeValue, out);
-            jarray.Set(env, i, jstop);
-
-            jni::DeleteLocalRef(env, zoom);
-            jni::DeleteLocalRef(env, in);
-            jni::DeleteLocalRef(env, out);
-            jni::DeleteLocalRef(env, compositeValue);
-            jni::DeleteLocalRef(env, jstop);
-
-            i++;
-        }
-    }
-
-    return jarray;
-}
-
-template <class I, typename O>
-inline jni::jobject* convertCompositeStopsArray(jni::JNIEnv& env, std::map<float, std::map<I, O>> value) {
-    static jni::jclass* javaClass = jni::NewGlobalRef(env, &jni::FindClass(env, "com/mapbox/mapboxsdk/style/functions/stops/Stop")).release();
-    static jni::jmethodID* constructor = &jni::GetMethodID(env, *javaClass, "<init>", "(Ljava/lang/Object;Ljava/lang/Object;)V");
-
-    jni::jarray<jni::jobject>& jarray = jni::NewObjectArray(env, value.size(), *javaClass);
-
-    size_t i = 0;
-    for (auto const& stop : value) {
-        jni::jobject* in = *convert<jni::jobject*, I>(env, stop.first);
-        jni::jobject* out = *convert<jni::jobject*, O>(env, stop.second);
-        jni::SetObjectArrayElement(env, jarray, i, &jni::NewObject(env, *javaClass, *constructor, in, out));
-        i++;
-        jni::DeleteLocalRef(env, in);
-        jni::DeleteLocalRef(env, out);
-    }
-
-    return &jarray;
-}
-
-/**
- * Conversion from core function stops to Stops java subclasses
- */
-template <class T>
-class StopsEvaluator {
-public:
-
-    StopsEvaluator(jni::JNIEnv& _env) : env(_env) {}
-
-    jni::jobject* operator()(const mbgl::style::CategoricalStops<T> &value) const {
-        return CategoricalStops::New(env, toFunctionStopJavaArray(env, value.stops)).Get();
-    }
-
-    jni::jobject* operator()(const mbgl::style::CompositeCategoricalStops<T> &value) const {
-        return CategoricalStops::New(env, toFunctionStopJavaArray(env, value.stops)).Get();
-    }
-
-    jni::jobject* operator()(const mbgl::style::ExponentialStops<T> &value) const {
-        return ExponentialStops::New(env, jni::Object<java::lang::Float>(*convert<jni::jobject*>(env, value.base)), toFunctionStopJavaArray(env, value.stops)).Get();
-    }
-
-    jni::jobject* operator()(const mbgl::style::CompositeExponentialStops<T> &value) const {
-        return ExponentialStops::New(env, jni::Object<java::lang::Float>(*convert<jni::jobject*>(env, value.base)), toFunctionStopJavaArray(env, value.stops)).Get();
-    }
-
-    jni::jobject* operator()(const mbgl::style::IdentityStops<T> &) const {
-        return IdentityStops::New(env).Get();
-    }
-
-    jni::jobject* operator()(const mbgl::style::IntervalStops<T> &value) const {
-        return IntervalStops::New(env, toFunctionStopJavaArray(env, value.stops)).Get();
-    }
-
-    jni::jobject* operator()(const mbgl::style::CompositeIntervalStops<T> &value) const {
-        return IntervalStops::New(env, toFunctionStopJavaArray(env, value.stops)).Get();
-    }
-
-private:
-    jni::JNIEnv& env;
-};
-
 template <class T>
 struct Converter<jni::jobject*, mbgl::style::CameraFunction<T>> {
 
     Result<jni::jobject*> operator()(jni::JNIEnv& env, const mbgl::style::CameraFunction<T>& value) const {
-        static jni::jclass* clazz = jni::NewGlobalRef(env, &jni::FindClass(env, "com/mapbox/mapboxsdk/style/functions/CameraFunction")).release();
-        static jni::jmethodID* constructor = &jni::GetMethodID(env, *clazz, "<init>", "(Lcom/mapbox/mapboxsdk/style/functions/stops/Stops;)V");
-
-        StopsEvaluator<T> evaluator(env);
-        jni::jobject* stops = apply_visitor(evaluator, value.stops);
-        jni::jobject* converted = &jni::NewObject(env, *clazz, *constructor, stops);
+        // Convert expressions
+        mbgl::Value expressionValue = value.getExpression().serialize();
+        JsonEvaluator jsonEvaluator{env};
+        jni::jobject* converted = apply_visitor(jsonEvaluator, expressionValue);
 
-        return { converted };
+        return converted;
     }
 };
 
@@ -181,21 +32,12 @@ template <class T>
 struct Converter<jni::jobject*, mbgl::style::SourceFunction<T>> {
 
     Result<jni::jobject*> operator()(jni::JNIEnv& env, const mbgl::style::SourceFunction<T>& value) const {
-        static jni::jclass* clazz = jni::NewGlobalRef(env, &jni::FindClass(env, "com/mapbox/mapboxsdk/style/functions/SourceFunction")).release();
-        static jni::jmethodID* constructor = &jni::GetMethodID(env, *clazz, "<init>",
-                                                               "(Ljava/lang/Object;Ljava/lang/String;Lcom/mapbox/mapboxsdk/style/functions/stops/Stops;)V");
-
-        // Convert stops
-        StopsEvaluator<T> evaluator(env);
-        jni::jobject* stops = apply_visitor(evaluator, value.stops);
-
-        // Convert default value
-        jni::jobject* defaultValue = nullptr;
-        if (value.defaultValue) {
-            defaultValue = *convert<jni::jobject*>(env, *value.defaultValue);
-        }
+        // Convert expressions
+        mbgl::Value expressionValue = value.getExpression().serialize();
+        JsonEvaluator jsonEvaluator{env};
+        jni::jobject* converted = apply_visitor(jsonEvaluator, expressionValue);
 
-        return { &jni::NewObject(env, *clazz, *constructor, defaultValue, jni::Make<jni::String>(env, value.property).Get(), stops) };
+        return converted;
     }
 };
 
@@ -203,22 +45,12 @@ template <class T>
 struct Converter<jni::jobject*, mbgl::style::CompositeFunction<T>> {
 
     Result<jni::jobject*> operator()(jni::JNIEnv& env, const mbgl::style::CompositeFunction<T>& value) const {
-        static jni::jclass* clazz = jni::NewGlobalRef(env, &jni::FindClass(env, "com/mapbox/mapboxsdk/style/functions/CompositeFunction")).release();
-        static jni::jmethodID* constructor = &jni::GetMethodID(env, *clazz, "<init>",
-                                                                "(Ljava/lang/Object;Ljava/lang/String;Lcom/mapbox/mapboxsdk/style/functions/stops/Stops;)V");
-
-        // Convert stops
-        StopsEvaluator<T> evaluator(env);
-        jni::jobject* stops = apply_visitor(evaluator, value.stops);
-
-
-        // Convert default value
-        jni::jobject* defaultValue = nullptr;
-        if (value.defaultValue) {
-            defaultValue = *convert<jni::jobject*>(env, *value.defaultValue);
-        }
+        // Convert expressions
+        mbgl::Value expressionValue = value.getExpression().serialize();
+        JsonEvaluator jsonEvaluator{env};
+        jni::jobject* converted = apply_visitor(jsonEvaluator, expressionValue);
 
-        return { &jni::NewObject(env, *clazz, *constructor, defaultValue, jni::Make<jni::String>(env, value.property).Get(), stops) };
+        return converted;
     }
 };
 
diff --git a/platform/android/src/style/conversion/gson.hpp b/platform/android/src/style/conversion/gson.hpp
new file mode 100644
index 0000000000..02c3fdd30d
--- /dev/null
+++ b/platform/android/src/style/conversion/gson.hpp
@@ -0,0 +1,114 @@
+#pragma once
+
+#include "../../conversion/constant.hpp"
+#include "../../conversion/collection.hpp"
+
+#include <mapbox/geometry.hpp>
+#include <jni/jni.hpp>
+#include "../../jni/local_object.hpp"
+#include "mapbox/geometry/feature.hpp"
+
+namespace mbgl {
+namespace android {
+namespace conversion {
+
+/**
+ * Turn mapbox::geometry::value type into Java Json
+ */
+class JsonEvaluator {
+public:
+
+    jni::JNIEnv& env;
+
+    jni::jobject* operator()(const mapbox::geometry::null_value_t) const {
+       return (jni::jobject*) nullptr;;
+    }
+
+    jni::jobject* operator()(const bool& value) const {
+        static jni::jclass* javaClass = jni::NewGlobalRef(env, &jni::FindClass(env, "com/google/gson/JsonPrimitive")).release();
+        static jni::jmethodID* constructor = &jni::GetMethodID(env, *javaClass, "<init>", "(Ljava/lang/Boolean;)V");
+
+        // Create JsonPrimitive
+        jni::LocalObject<jni::jobject> converted = jni::NewLocalObject(env, *convert<jni::jobject*, bool>(env, value));
+        jni::jobject* object = &jni::NewObject(env, *javaClass, *constructor, *converted);
+
+        return object;
+    }
+
+    template <class Number>
+    jni::jobject* operator()(const Number& value) const {
+        static jni::jclass* javaClass = jni::NewGlobalRef(env, &jni::FindClass(env, "com/google/gson/JsonPrimitive")).release();
+        static jni::jmethodID* constructor = &jni::GetMethodID(env, *javaClass, "<init>", "(Ljava/lang/Number;)V");
+
+        // Create JsonPrimitive
+        jni::LocalObject<jni::jobject> converted = jni::NewLocalObject(env, *convert<jni::jobject*, Number>(env, value));
+        jni::jobject* object = &jni::NewObject(env, *javaClass, *constructor, converted.get());
+
+        return object;
+    }
+
+    jni::jobject* operator()(const std::string value) const {
+        static jni::jclass* javaClass = jni::NewGlobalRef(env, &jni::FindClass(env, "com/google/gson/JsonPrimitive")).release();
+        static jni::jmethodID* constructor = &jni::GetMethodID(env, *javaClass, "<init>", "(Ljava/lang/String;)V");
+
+        // Create JsonPrimitive
+        jni::LocalObject<jni::jobject> converted = jni::NewLocalObject(env, *convert<jni::jobject*, std::string>(env, value));
+        jni::jobject* object = &jni::NewObject(env, *javaClass, *constructor, converted.get());
+
+        return object;
+    }
+
+    jni::jobject* operator()(const std::vector<mapbox::geometry::value> values) const {
+        static jni::jclass* javaClass = jni::NewGlobalRef(env, &jni::FindClass(env, "com/google/gson/JsonArray")).release();
+        static jni::jmethodID* constructor = &jni::GetMethodID(env, *javaClass, "<init>", "()V");;
+        static jni::jmethodID* add = &jni::GetMethodID(env, *javaClass, "add", "(Lcom/google/gson/JsonElement;)V");
+
+        // Create json array
+        jni::jobject* jarray = &jni::NewObject(env, *javaClass, *constructor);
+
+        // Add values
+        for (const auto &v : values) {
+            jni::LocalObject<jni::jobject> converted = jni::NewLocalObject(env, mapbox::geometry::value::visit(v, *this));
+            jni::CallMethod<void>(env, jarray, *add, converted.get());
+        }
+
+        return jarray;
+    }
+
+    jni::jobject* operator()(const std::unordered_map<std::string, mapbox::geometry::value> value) const {
+        static jni::jclass* javaClass = jni::NewGlobalRef(env, &jni::FindClass(env, "com/google/gson/JsonObject")).release();
+        static jni::jmethodID* constructor = &jni::GetMethodID(env, *javaClass, "<init>", "()V");;
+        static jni::jmethodID* add = &jni::GetMethodID(env, *javaClass, "add", "(Ljava/lang/String;Lcom/google/gson/JsonElement;)V");
+
+        // Create json object
+        jni::jobject* jsonObject = &jni::NewObject(env, *javaClass, *constructor);
+
+        // Add items
+        for (auto &item : value) {
+            jni::LocalObject<jni::jobject> converted = jni::NewLocalObject(env, mbgl::Value::visit(item.second, *this));
+            jni::LocalObject<jni::jobject> key = jni::NewLocalObject(env, *convert<jni::jobject*, std::string>(env, item.first));
+            jni::CallMethod<void>(env, jsonObject, *add, key.get(), converted.get());
+        }
+
+        return jsonObject;
+    }
+
+private:
+
+};
+
+/**
+ * mapbox::geometry::value -> Java Json
+ */
+template <>
+struct Converter<jni::jobject*, mapbox::geometry::value> {
+    Result<jni::jobject*> operator()(jni::JNIEnv& env, const mapbox::geometry::value& value) const {
+        JsonEvaluator evaluator { env } ;
+        jni::jobject* converted = mapbox::geometry::value::visit(value, evaluator);
+        return { converted };
+    }
+};
+
+}
+}
+}
diff --git a/platform/android/src/style/conversion/property_value.hpp b/platform/android/src/style/conversion/property_value.hpp
index 53f210ac33..4ed25eac25 100644
--- a/platform/android/src/style/conversion/property_value.hpp
+++ b/platform/android/src/style/conversion/property_value.hpp
@@ -7,6 +7,7 @@
 #include "../../conversion/constant.hpp"
 #include "types.hpp"
 #include "function.hpp"
+#include "gson.hpp"
 
 namespace mbgl {
 namespace android {
@@ -39,7 +40,7 @@ public:
     }
 
     jni::jobject* operator()(const mbgl::style::CompositeFunction<T> &value) const {
-      return *convert<jni::jobject*, mbgl::style::CompositeFunction<T>>(env, value);
+        return *convert<jni::jobject*, mbgl::style::CompositeFunction<T>>(env, value);
     }
 
 private:
diff --git a/platform/android/src/style/functions/categorical_stops.cpp b/platform/android/src/style/functions/categorical_stops.cpp
deleted file mode 100644
index 2aff9730a7..0000000000
--- a/platform/android/src/style/functions/categorical_stops.cpp
+++ /dev/null
@@ -1,18 +0,0 @@
-#include "categorical_stops.hpp"
-
-namespace mbgl {
-namespace android {
-
-jni::Object<CategoricalStops> CategoricalStops::New(jni::JNIEnv& env, jni::Array<jni::Object<Stop>> stops) {
-    static auto constructor = CategoricalStops::javaClass.GetConstructor<jni::Array<jni::Object<Stop>>>(env);
-    return CategoricalStops::javaClass.New(env, constructor, stops);
-}
-
-jni::Class<CategoricalStops> CategoricalStops::javaClass;
-
-void CategoricalStops::registerNative(jni::JNIEnv& env) {
-    CategoricalStops::javaClass = *jni::Class<CategoricalStops>::Find(env).NewGlobalRef(env).release();
-}
-
-} // namespace android
-} // namespace mbgl
diff --git a/platform/android/src/style/functions/categorical_stops.hpp b/platform/android/src/style/functions/categorical_stops.hpp
deleted file mode 100644
index a198c8d5c9..0000000000
--- a/platform/android/src/style/functions/categorical_stops.hpp
+++ /dev/null
@@ -1,23 +0,0 @@
-#pragma once
-
-#include <mbgl/util/noncopyable.hpp>
-#include <jni/jni.hpp>
-
-#include "stop.hpp"
-
-namespace mbgl {
-namespace android {
-
-class CategoricalStops : private mbgl::util::noncopyable {
-public:
-    static constexpr auto Name() { return "com/mapbox/mapboxsdk/style/functions/stops/CategoricalStops"; };
-
-    static jni::Object<CategoricalStops> New(jni::JNIEnv&, jni::Array<jni::Object<Stop>>);
-
-    static jni::Class<CategoricalStops> javaClass;
-
-    static void registerNative(jni::JNIEnv&);
-};
-
-} // namespace android
-} // namespace mbgl
diff --git a/platform/android/src/style/functions/exponential_stops.cpp b/platform/android/src/style/functions/exponential_stops.cpp
deleted file mode 100644
index 6390a0ec35..0000000000
--- a/platform/android/src/style/functions/exponential_stops.cpp
+++ /dev/null
@@ -1,18 +0,0 @@
-#include "exponential_stops.hpp"
-
-namespace mbgl {
-namespace android {
-
-jni::Object<ExponentialStops> ExponentialStops::New(jni::JNIEnv& env, jni::Object<java::lang::Float> base, jni::Array<jni::Object<Stop>> stops) {
-    static auto constructor = ExponentialStops::javaClass.GetConstructor<jni::Object<java::lang::Float>, jni::Array<jni::Object<Stop>>>(env);
-    return ExponentialStops::javaClass.New(env, constructor, base, stops);
-}
-
-jni::Class<ExponentialStops> ExponentialStops::javaClass;
-
-void ExponentialStops::registerNative(jni::JNIEnv& env) {
-    ExponentialStops::javaClass = *jni::Class<ExponentialStops>::Find(env).NewGlobalRef(env).release();
-}
-
-} // namespace android
-} // namespace mbgl
diff --git a/platform/android/src/style/functions/exponential_stops.hpp b/platform/android/src/style/functions/exponential_stops.hpp
deleted file mode 100644
index 391d723cef..0000000000
--- a/platform/android/src/style/functions/exponential_stops.hpp
+++ /dev/null
@@ -1,24 +0,0 @@
-#pragma once
-
-#include <mbgl/util/noncopyable.hpp>
-#include <jni/jni.hpp>
-
-#include "../../java/lang.hpp"
-#include "stop.hpp"
-
-namespace mbgl {
-namespace android {
-
-class ExponentialStops : private mbgl::util::noncopyable {
-public:
-    static constexpr auto Name() { return "com/mapbox/mapboxsdk/style/functions/stops/ExponentialStops"; };
-
-    static jni::Object<ExponentialStops> New(jni::JNIEnv&, jni::Object<java::lang::Float>, jni::Array<jni::Object<Stop>>);
-
-    static jni::Class<ExponentialStops> javaClass;
-
-    static void registerNative(jni::JNIEnv&);
-};
-
-} // namespace android
-} // namespace mbgl
diff --git a/platform/android/src/style/functions/identity_stops.cpp b/platform/android/src/style/functions/identity_stops.cpp
deleted file mode 100644
index 239b0ddb88..0000000000
--- a/platform/android/src/style/functions/identity_stops.cpp
+++ /dev/null
@@ -1,18 +0,0 @@
-#include "identity_stops.hpp"
-
-namespace mbgl {
-namespace android {
-
-jni::Object<IdentityStops> IdentityStops::New(jni::JNIEnv& env) {
-    static auto constructor = IdentityStops::javaClass.GetConstructor<>(env);
-    return IdentityStops::javaClass.New(env, constructor);
-}
-
-jni::Class<IdentityStops> IdentityStops::javaClass;
-
-void IdentityStops::registerNative(jni::JNIEnv& env) {
-    IdentityStops::javaClass = *jni::Class<IdentityStops>::Find(env).NewGlobalRef(env).release();
-}
-
-} // namespace android
-} // namespace mbgl
diff --git a/platform/android/src/style/functions/identity_stops.hpp b/platform/android/src/style/functions/identity_stops.hpp
deleted file mode 100644
index 150b2135f0..0000000000
--- a/platform/android/src/style/functions/identity_stops.hpp
+++ /dev/null
@@ -1,21 +0,0 @@
-#pragma once
-
-#include <mbgl/util/noncopyable.hpp>
-#include <jni/jni.hpp>
-
-namespace mbgl {
-namespace android {
-
-class IdentityStops : private mbgl::util::noncopyable {
-public:
-    static constexpr auto Name() { return "com/mapbox/mapboxsdk/style/functions/stops/IdentityStops"; };
-
-    static jni::Object<IdentityStops> New(jni::JNIEnv&);
-
-    static jni::Class<IdentityStops> javaClass;
-
-    static void registerNative(jni::JNIEnv&);
-};
-
-} // namespace android
-} // namespace mbgl
diff --git a/platform/android/src/style/functions/interval_stops.cpp b/platform/android/src/style/functions/interval_stops.cpp
deleted file mode 100644
index c3d9b6513f..0000000000
--- a/platform/android/src/style/functions/interval_stops.cpp
+++ /dev/null
@@ -1,18 +0,0 @@
-#include "interval_stops.hpp"
-
-namespace mbgl {
-namespace android {
-
-jni::Object<IntervalStops> IntervalStops::New(jni::JNIEnv& env, jni::Array<jni::Object<Stop>> stops) {
-    static auto constructor = IntervalStops::javaClass.GetConstructor<jni::Array<jni::Object<Stop>>>(env);
-    return IntervalStops::javaClass.New(env, constructor, stops);
-}
-
-jni::Class<IntervalStops> IntervalStops::javaClass;
-
-void IntervalStops::registerNative(jni::JNIEnv& env) {
-    IntervalStops::javaClass = *jni::Class<IntervalStops>::Find(env).NewGlobalRef(env).release();
-}
-
-} // namespace android
-} // namespace mbgl
diff --git a/platform/android/src/style/functions/interval_stops.hpp b/platform/android/src/style/functions/interval_stops.hpp
deleted file mode 100644
index e3f75159cf..0000000000
--- a/platform/android/src/style/functions/interval_stops.hpp
+++ /dev/null
@@ -1,23 +0,0 @@
-#pragma once
-
-#include <mbgl/util/noncopyable.hpp>
-#include <jni/jni.hpp>
-
-#include "stop.hpp"
-
-namespace mbgl {
-namespace android {
-
-class IntervalStops : private mbgl::util::noncopyable {
-public:
-    static constexpr auto Name() { return "com/mapbox/mapboxsdk/style/functions/stops/IntervalStops"; };
-
-    static jni::Object<IntervalStops> New(jni::JNIEnv&, jni::Array<jni::Object<Stop>>);
-
-    static jni::Class<IntervalStops> javaClass;
-
-    static void registerNative(jni::JNIEnv&);
-};
-
-} // namespace android
-} // namespace mbgl
diff --git a/platform/android/src/style/functions/stop.cpp b/platform/android/src/style/functions/stop.cpp
deleted file mode 100644
index f9ed4b7368..0000000000
--- a/platform/android/src/style/functions/stop.cpp
+++ /dev/null
@@ -1,21 +0,0 @@
-#include "interval_stops.hpp"
-
-namespace mbgl {
-namespace android {
-
-jni::Object<Stop::CompositeValue> Stop::CompositeValue::New(jni::JNIEnv& env, jni::Object<java::lang::Number> zoom, jni::Object<> value) {
-    static auto constructor = Stop::CompositeValue::javaClass.GetConstructor<jni::Object<java::lang::Number>, jni::Object<>>(env);
-    return Stop::CompositeValue::javaClass.New(env, constructor, zoom, value);
-}
-
-jni::Class<Stop> Stop::javaClass;
-
-jni::Class<Stop::CompositeValue> Stop::CompositeValue::javaClass;
-
-void Stop::registerNative(jni::JNIEnv& env) {
-    Stop::javaClass = *jni::Class<Stop>::Find(env).NewGlobalRef(env).release();
-    Stop::CompositeValue::javaClass = *jni::Class<Stop::CompositeValue>::Find(env).NewGlobalRef(env).release();
-}
-
-} // namespace android
-} // namespace mbgl
diff --git a/platform/android/src/style/functions/stop.hpp b/platform/android/src/style/functions/stop.hpp
deleted file mode 100644
index 7c697db65d..0000000000
--- a/platform/android/src/style/functions/stop.hpp
+++ /dev/null
@@ -1,36 +0,0 @@
-#pragma once
-
-#include <mbgl/util/noncopyable.hpp>
-#include <jni/jni.hpp>
-
-#include "../../java/lang.hpp"
-
-namespace mbgl {
-namespace android {
-
-class Stop : private mbgl::util::noncopyable {
-public:
-    static constexpr auto Name() { return "com/mapbox/mapboxsdk/style/functions/stops/Stop"; };
-
-    template<class I, class O>
-    static jni::Object<Stop> New(jni::JNIEnv& env, jni::Object<I> in, jni::Object<O> out) {
-        static auto constructor = Stop::javaClass.GetConstructor<jni::Object<>, jni::Object<>>(env);
-        return Stop::javaClass.New(env, constructor, (jni::Object<>) in, (jni::Object<>) out);
-    }
-
-    static jni::Class<Stop> javaClass;
-
-    static void registerNative(jni::JNIEnv&);
-
-    class CompositeValue : private mbgl::util::noncopyable {
-    public:
-        static constexpr auto Name() { return "com/mapbox/mapboxsdk/style/functions/stops/Stop$CompositeValue"; };
-
-        static jni::Object<Stop::CompositeValue> New(jni::JNIEnv&, jni::Object<java::lang::Number>, jni::Object<>);
-
-        static jni::Class<Stop::CompositeValue> javaClass;
-    };
-};
-
-} // namespace android
-} // namespace mbgl