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-rw-r--r--include/mbgl/style/expression/step.hpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/mbgl/style/expression/step.hpp b/include/mbgl/style/expression/step.hpp
index e3c49bc609..4a0a724d7c 100644
--- a/include/mbgl/style/expression/step.hpp
+++ b/include/mbgl/style/expression/step.hpp
@@ -33,6 +33,8 @@ public:
bool operator==(const Expression& e) const override;
+ std::vector<optional<Value>> possibleOutputs() const override;
+
static ParseResult parse(const mbgl::style::conversion::Convertible& value, ParsingContext& ctx);
private: