/// Reimplemented from ModelAPI_Feature::isPreviewNeeded(). Returns false.
PARAMETERSPLUGIN_EXPORT virtual bool isPreviewNeeded() const { return false; }
+
+ /// Returns true if result is persistent (stored in document) and on undo-redo, save-open
+ /// it is not needed to recompute it.
+ PARAMETERSPLUGIN_EXPORT virtual bool isPersistentResult() {return false;}
};