[ios, macos] Revised descriptions for abstract classes (#9095)

Addresses https://github.com/mapbox/mapbox-gl-native/issues/8635

8 files changed, 31 insertions, 29 deletions

diff --git a/platform/darwin/src/MGLForegroundStyleLayer.h b/platform/darwin/src/MGLForegroundStyleLayer.h
index 16a973630e..bcd323fb99 100644
--- a/platform/darwin/src/MGLForegroundStyleLayer.h
+++ b/platform/darwin/src/MGLForegroundStyleLayer.h
@@ -11,9 +11,10 @@ NS_ASSUME_NONNULL_BEGIN
  `MGLForegroundStyleLayer` is an abstract superclass for style layers whose
  content is defined by an `MGLSource` object.
 
- Do not create instances of this class directly, and do not create your own
- subclasses of this class. Instead, create instances of `MGLRasterStyleLayer`
- and the concrete subclasses of `MGLVectorStyleLayer`.
+ Create instances of `MGLRasterStyleLayer` and the concrete subclasses of
+ `MGLVectorStyleLayer` in order to use `MGLForegroundStyleLayer`'s methods.
+ Do not create instances of `MGLForegroundStyleLayer` directly, and do not
+ create your own subclasses of this class.
  */
 MGL_EXPORT
 @interface MGLForegroundStyleLayer : MGLStyleLayer
diff --git a/platform/darwin/src/MGLMultiPoint.h b/platform/darwin/src/MGLMultiPoint.h
index 429bbdb22d..ee9eb530a4 100644
--- a/platform/darwin/src/MGLMultiPoint.h
+++ b/platform/darwin/src/MGLMultiPoint.h
@@ -10,8 +10,9 @@ NS_ASSUME_NONNULL_BEGIN
  The `MGLMultiPoint` class is an abstract superclass used to define shapes
  composed of multiple vertices.
 
- You do not create instances of this class directly. Instead, you create
- instances of the `MGLPolyline` or `MGLPolygon` classes. However, you can use
+ Create instances of `MGLPolyline` or `MGLPolygon` in order to use 
+ properties of `MGLMultiPoint`. Do not create instances of `MGLMultiPoint`
+ directly and do not create your own subclasses of this class. You can use
  the method and properties of this class to access information about the
  vertices of the line or polygon.
 
diff --git a/platform/darwin/src/MGLShape.h b/platform/darwin/src/MGLShape.h
index bd8b6152d2..e965710552 100644
--- a/platform/darwin/src/MGLShape.h
+++ b/platform/darwin/src/MGLShape.h
@@ -10,11 +10,11 @@ NS_ASSUME_NONNULL_BEGIN
  constitute the content of a map – not only the overlays atop the map, but also
  the content that forms the base map.
 
- You do not create instances of this class directly or create subclasses of this
- class. Instead, you create instances of `MGLPointAnnotation`,
- `MGLPointCollection`, `MGLPolyline`, `MGLMultiPolyline`, `MGLPolygon`,
- `MGLMultiPolygon`, or `MGLShapeCollection`. The shape classes correspond to the
- <a href="https://tools.ietf.org/html/rfc7946#section-3.1">Geometry</a> object
+ Create instances of `MGLPointAnnotation`, `MGLPointCollection`, `MGLPolyline`,
+ `MGLMultiPolyline`, `MGLPolygon`, `MGLMultiPolygon`, or `MGLShapeCollection` in
+ order to use `MGLShape`'s methods. Do not create instances of `MGLShape` directly,
+ and do not create your own subclasses of this class. The shape classes correspond
+ to the <a href="https://tools.ietf.org/html/rfc7946#section-3.1">Geometry</a> object
  types in the GeoJSON standard, but some have nonstandard names for backwards
  compatibility.
 
diff --git a/platform/darwin/src/MGLSource.h b/platform/darwin/src/MGLSource.h
index 8bf48907cc..151363104e 100644
--- a/platform/darwin/src/MGLSource.h
+++ b/platform/darwin/src/MGLSource.h
@@ -16,9 +16,10 @@ NS_ASSUME_NONNULL_BEGIN
  add and remove sources dynamically using methods such as
  `-[MGLStyle addSource:]` and `-[MGLStyle sourceWithIdentifier:]`.
 
- Do not create instances of this class directly, and do not create your own
- subclasses of this class. Instead, create instances of `MGLShapeSource` and the
- concrete subclasses of `MGLTileSource`, `MGLVectorSource` and `MGLRasterSource`.
+ Create instances of `MGLShapeSource` and the concrete subclasses of
+ `MGLTileSource`, `MGLVectorSource` and `MGLRasterSource` in order to use
+ `MGLMultiPoint`'s properties and methods. Do not create instances of `MGLSource`
+ directly, and do not create your own subclasses of this class.
  */
 MGL_EXPORT
 @interface MGLSource : NSObject
diff --git a/platform/darwin/src/MGLStyleLayer.h b/platform/darwin/src/MGLStyleLayer.h
index 7d181667d6..b610a27607 100644
--- a/platform/darwin/src/MGLStyleLayer.h
+++ b/platform/darwin/src/MGLStyleLayer.h
@@ -14,10 +14,10 @@ NS_ASSUME_NONNULL_BEGIN
  `MGLStyleLayer` object, which you can use to refine the map’s appearance. You
  can also add and remove style layers dynamically.
 
- Do not create instances of this class directly, and do not create your own
- subclasses of this class. Instead, create instances of
- `MGLBackgroundStyleLayer` and the concrete subclasses of
- `MGLForegroundStyleLayer`.
+ Create instances of `MGLBackgroundStyleLayer` and the concrete subclasses of
+ `MGLForegroundStyleLayer` in order to use `MGLStyleLayer`'s properties and methods.
+ You do not create instances of `MGLStyleLayer` directly, and do not
+ create your own subclasses of this class.
  
  Do not add `MGLStyleLayer` objects to the `style` property of a `MGLMapView` before
  `-mapView:didFinishLoadingStyle:` is called.
diff --git a/platform/darwin/src/MGLStyleValue.h b/platform/darwin/src/MGLStyleValue.h
index 2bb3aca4f4..9c9b1dc4d1 100644
--- a/platform/darwin/src/MGLStyleValue.h
+++ b/platform/darwin/src/MGLStyleValue.h
@@ -239,11 +239,10 @@ MGL_EXPORT
  defined by an `MGLCameraStyleFunction`, `MGLSourceStyleFunction`, or
  `MGLCompositeStyleFunction` object.
  
- Do not create instances of this class directly, and do not create your own
- subclasses of this class. Instead, use one of the class factory methods in
- `MGLStyleValue` to create instances of the following concrete subclasses:
- `MGLCameraStyleFunction`, `MGLSourceStyleFunction`, and
- `MGLCompositeStyleFunction`.
+ Create instances of `MGLCameraStyleFunction`, `MGLSourceStyleFunction`, and
+ `MGLCompositeStyleFunction` in order to use `MGLStyleFunction`'s methods. Do
+ not create instances of `MGLStyleFunction` directly, and do not create your
+ own subclasses of this class.
 
  The `MGLStyleFunction` class takes a generic parameter `T` that indicates the
  Foundation class being wrapped by this class.
diff --git a/platform/darwin/src/MGLTileSource.h b/platform/darwin/src/MGLTileSource.h
index 538b94037e..caeafcd2f6 100644
--- a/platform/darwin/src/MGLTileSource.h
+++ b/platform/darwin/src/MGLTileSource.h
@@ -140,9 +140,9 @@ typedef NS_ENUM(NSUInteger, MGLTileCoordinateSystem) {
  Mapbox-hosted tile set, view it in
  <a href="https://www.mapbox.com/studio/tilesets/">Mapbox Studio’s Tilesets editor</a>.
 
- Do not create instances of this class directly, and do not create your own
- subclasses of this class. Instead, create instances of `MGLRasterSource` and
- `MGLVectorSource`.
+ Create instances of `MGLRasterSource` and `MGLVectorSource` in order to use
+ `MGLTileSource`'s properties and methods. Do not create instances of `MGLTileSource`
+ directly, and do not create your own subclasses of this class.
  */
 MGL_EXPORT
 @interface MGLTileSource : MGLSource
diff --git a/platform/darwin/src/MGLVectorStyleLayer.h b/platform/darwin/src/MGLVectorStyleLayer.h
index c6193e6046..e54a580aed 100644
--- a/platform/darwin/src/MGLVectorStyleLayer.h
+++ b/platform/darwin/src/MGLVectorStyleLayer.h
@@ -9,10 +9,10 @@ NS_ASSUME_NONNULL_BEGIN
  `MGLVectorStyleLayer` is an abstract superclass for style layers whose content
  is defined by an `MGLShapeSource` or `MGLVectorSource` object.
 
- Do not create instances of this class directly, and do not create your own
- subclasses of this class. Instead, create instances of the following concrete
- subclasses: `MGLCircleStyleLayer`, `MGLFillStyleLayer`, `MGLLineStyleLayer`,
- and `MGLSymbolStyleLayer`.
+ Create instances of `MGLCircleStyleLayer`, `MGLFillStyleLayer`, `MGLLineStyleLayer`,
+ and `MGLSymbolStyleLayer` in order to use `MGLVectorStyleLayer`'s properties and
+ methods. Do not create instances of `MGLVectorStyleLayer` directly, and do not
+ create your own subclasses of this class.
  */
 MGL_EXPORT
 @interface MGLVectorStyleLayer : MGLForegroundStyleLayer