list oper contain oper classifi contain callact todo fact includ oper import clasifi argouml uml ui uml combo box model build model list build model list object target target manag instanc model target collect op arrai list model facad action target object ns model facad model element contain target model facad ns ns model facad model element contain ns ns model facad namespac ns collect model model manag helper model element kind ns model meta type classifi iter iter op add model facad oper realli sure let add oper link action model list need incas oper move mayb import xmi object current model facad oper target model facad oper current op contain current op add current set element op 