uml associ build associ object classifi object aggreg kind object classifi object aggreg kind unidirect classifi classifi illeg argument except classifi connect classifi classifi classifi classifi classifi classifi aggreg kind agg aggreg kind aggreg kind aggreg kind agg aggreg kind aggreg kind namespac ns namespac ns model impl model manag helper read ns ns namespac ns model impl model manag helper read ns illeg argument except namespac non writeabl uml associ assoc creat associ ns ref outermost assoc set assoc set namespac ns nav unidirect nav build associ end assoc nav agg build associ end assoc nav agg assoc 