vetoabl chang properti chang event pce properti veto except own element equal pce properti list old own list pce old valu object element pce valu object model element model facad model element element model element model element element model element old own contain element defin log lp log granular type statement lp log local nest statement log debug model remov model element endif model facad classifi model element remov node model element model facad model element remov node model element model facad associ model element remov edg model element model facad depend model element remov edg model element model facad gener model element remov edg model element defin log lp log granular type statement lp log local nest statement log debug model ad model element endif 