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m-kuhn · m-kuhn · commit 35f8083aab3e · 2017-07-07T13:14:14.000+02:00
diff --git a/src/core/expression/qgsexpressionfunction.h b/src/core/expression/qgsexpressionfunction.h
@@ -455,6 +455,14 @@ class QgsStaticExpressionFunction : public QgsExpressionFunction
     bool mIsStatic = false;
 };
 
+/**
+ * Handles the ``with_variable(name, value, node)`` expression function.
+ * It temporarily appends a new scope to the expression context for all nested
+ * nodes.
+ *
+ * \note Not available in Python bindings
+ * \since QGIS 3.0
+ */
 class QgsWithVariableExpressionFunction : public QgsExpressionFunction
 {
   public:
