param uml messag param param refind oper handl argument object uml messag list refind oper collect arrai list model facad actual argument model facad action uml messag iter iter ii ii ii size ii object uml argument uml argument uml argument model common behavior factori creat argument model common behavior helper add actual argument model facad action uml messag uml argument refind oper model facad valu uml argument ii equal model facad bodi model facad valu uml argument valu ii ii object uml express model data type factori creat express express languag valu trim model common behavior helper set valu uml argument uml express model common behavior helper remov actual argument model facad action uml messag refind oper refind oper 