public function deliveryLabelChanged(MetadataModified $event)
    {
        $resource = $event->getResource();
        if ($event->getMetadataUri() === OntologyRdfs::RDFS_LABEL) {
            $assemblyClass = DeliveryAssemblyService::singleton()->getRootClass();
            if ($resource->isInstanceOf($assemblyClass)) {
                /** @var $queueService QueueDispatcherInterface */
                $queueService = $this->getServiceLocator()->get(QueueDispatcherInterface::SERVICE_ID);
                $queueService->createTask(new DeliveryUpdaterTask(), [$resource->getUri(), $event->getMetadataValue()], 'Update delivery label');
            }
        }
    }