overrid add node object node node model facad associ node model facad nari associ node binari associ node reject contain node node model facad associ node collect end model facad connect node add object end end object classifi model facad classifi end contain node classifi add add model facad node node model facad compon node model facad node model facad node model facad object node model facad node instanc node model facad compon instanc node model facad comment node 