/** * Propagates a given collection-changed event to all attached collection-changed listeners. * * @param CollectionChangedEvent $event */ protected function propagateCollectionChangedEvent(CollectionChangedEvent $event) { if ($event->getType() === CollectionChangedEvent::ITEM_REMOVED) { $event->getItem()->removeEntityChangedListener($this); } else { $event->getItem()->addEntityChangedListener($this); } parent::propagateCollectionChangedEvent($event); }