realiz build realiz object client object supplier object namespac realiz creat client namespac client namespac client behavior classifi illeg argument except client instanc behavior classifi non nl supplier illeg argument except supplier non nl runnabl run runnabl run realiz realiz uml factori instanc creat realiz realiz set implement classifi behavior classifi client realiz set contract supplier behavior classifi client realiz add realiz param add realiz chang command cmd chang command model impl run creat realiz non nl client supplier non nl edit domain command stack execut cmd cmd set object run param client supplier realiz run param 