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-rw-r--r--include/mbgl/style/function/source_function.hpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/mbgl/style/function/source_function.hpp b/include/mbgl/style/function/source_function.hpp
index bd7b109fd8..d3caa90ee5 100644
--- a/include/mbgl/style/function/source_function.hpp
+++ b/include/mbgl/style/function/source_function.hpp
@@ -68,6 +68,8 @@ public:
bool useIntegerZoom = false;
+ const expression::Expression& getExpression() const { return *expression; }
+
// retained for compatibility with pre-expression function API
std::string property;
Stops stops;