+ int getTick() const;
+
+ // sets the version number of the shape starting from 1
+ void setTick(const int theValue);
+
+ // sets the shape by the pointer to the TopoDS_Shape
+ void SetShapeByPointer(const long long theShape);
+
+ // returns the group shape related to the current selection in the group
+ long long groupShape(long long theMainShape, const std::list<long> theSelection);