collect behavior featur behavior featur object element element model element illeg argument except list content arrai list list behavior featur result arrai list behavior featur content add model facad tag valu collect element content add model element element templat paramet iter content iter object classifi classifi clazz classifi clazz data type object clazz featur behavior featur result add behavior featur todo nd singl result add behavior featur invalid object except invalid element except result 