+ /// Part must be added only to PartSet
+ PARTSETPLUGIN_EXPORT virtual const std::string& documentToAdd();
+
+ // composite feature methods
+
+ /// Adds feature to its document
+ virtual std::shared_ptr<ModelAPI_Feature> addFeature(std::string theID);
+
+ /// Returns the number of sub-features of the document
+ virtual int numberOfSubs(bool forTree = false) const;
+
+ /// Returns the sub-feature by zero-base index
+ virtual std::shared_ptr<ModelAPI_Feature> subFeature(const int theIndex, bool forTree = false);
+
+ /// Returns the sub-feature unique identifier in this composite feature by zero-base index
+ virtual int subFeatureId(const int theIndex) const;
+
+ /// Returns true if feature or reuslt belong to this composite feature as subs
+ virtual bool isSub(ObjectPtr theObject) const;
+
+ /// This method to inform that sub-feature is removed and must be removed from the internal data
+ /// structures of the owner (the remove from the document will be done outside just after)
+ virtual void removeFeature(std::shared_ptr<ModelAPI_Feature> theFeature);