OCL method->forAll(obj |obj.oclIsKindOf(behaviorActivities::K2Activity)) OCL self.method->forAll (act | act.oclIsKindOf(behaviorActivities::K2Activity) implies act.oclAsType(behaviorActivities::K2Activity).node->select( oclIsKindOf(behaviorActivities::K2ActivityParameterNode))->collect(node | node.oclAsType(behaviorActivities::K2ActivityParameterNode).parameter)->asBag() = self.ownedParameter->asBag())