content pre oper content result set contain model element own import content set model element content self own element union self import element pre subsystem subtyp pre oper content result set contain model element own import subsystem content set model element content self own element union self import element pre param pkg content own plu import element collect model element content uml pkg collect model element result arrai list model element collect element pkg element element ei result add ei import element result add content namespac pkg result 