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