add edg given node exampl method let add exist associ figclassifi param node model element queri connect overrid add node relat edg object node add node relat edg node model facad classifi node collect end model facad associ end node iter iter end iter iter object associ model facad associ iter model facad nari associ associ add edg associ add edg associ model facad generaliz element node collect gener model facad gener node iter iter gener iter iter object gener iter add edg gener add edg gener collect special model facad special node iter special iter iter object special iter add edg special add edg special model facad associ node collect end model facad connect node iter iter end iter iter object associ end iter add edg associ end add edg associ end 