+ virtual vtkDataObject* GetVTKDataObject( );
+ virtual const vtkDataObject* GetVTKDataObject( ) const;
+ virtual void SetVTKDataObject( vtkDataObject* o ) = 0;
+
+ Object* GetSource( );
+ const Object* GetSource( ) const;
+ void SetSource( Object* src );
+
+ void DisconnectPipeline( );
+
+ protected:
+ DataObject( );
+ virtual ~DataObject( );