Doctrine\ORM\EntityManager::getRepository PHP Method

    public function getRepository($entityName)
    {
        $entityName = ltrim($entityName, '\\');
        if (isset($this->repositories[$entityName])) {
            return $this->repositories[$entityName];
        }

        $metadata = $this->getClassMetadata($entityName);
        $customRepositoryClassName = $metadata->customRepositoryClassName;

        if ($customRepositoryClassName !== null) {
            $repository = new $customRepositoryClassName($this, $metadata);
        } else {
            $repository = new EntityRepository($this, $metadata);
        }

        $this->repositories[$entityName] = $repository;

        return $repository;
    }

 /**
  * @DI\Observe("badge-resource-icap_dropzone-correction_delete-generate_validation_link")
  * @DI\Observe("badge-resource-icap_dropzone-correction_end-generate_validation_link")
  * @DI\Observe("badge-resource-icap_dropzone-correction_start-generate_validation_link")
  * @DI\Observe("badge-resource-icap_dropzone-correction_update-generate_validation_link")
  * @DI\Observe("badge-resource-icap_dropzone-correction_validation_change-generate_validation_link")
  * @DI\Observe("badge-resource-icap_dropzone-criterion_create-generate_validation_link")
  * @DI\Observe("badge-resource-icap_dropzone-criterion_delete-generate_validation_link")
  * @DI\Observe("badge-resource-icap_dropzone-criterion_update-generate_validation_link")
  * @DI\Observe("badge-resource-icap_dropzone-document_create-generate_validation_link")
  * @DI\Observe("badge-resource-icap_dropzone-document_delete-generate_validation_link")
  * @DI\Observe("badge-resource-icap_dropzone-document_open-generate_validation_link")
  * @DI\Observe("badge-resource-icap_dropzone-drop_end-generate_validation_link")
  * @DI\Observe("badge-resource-icap_dropzone-drop_evaluate-generate_validation_link")
  * @DI\Observe("badge-resource-icap_dropzone-drop_start-generate_validation_link")
  * @DI\Observe("badge-resource-icap_dropzone-dropzone_configure-generate_validation_link")
  */
 public function onBagdeCreateValidationLink($event)
 {
     $content = null;
     $log = $event->getLog();
     switch ($log->getAction()) {
         case LogCorrectionDeleteEvent::ACTION:
         case LogCorrectionEndEvent::ACTION:
         case LogCorrectionStartEvent::ACTION:
         case LogCorrectionUpdateEvent::ACTION:
         case LogCorrectionValidationChangeEvent::ACTION:
         case LogCriterionCreateEvent::ACTION:
         case LogCriterionDeleteEvent::ACTION:
         case LogCriterionUpdateEvent::ACTION:
         case LogDocumentCreateEvent::ACTION:
         case LogDocumentDeleteEvent::ACTION:
         case LogDocumentOpenEvent::ACTION:
         case LogDropEndEvent::ACTION:
         case LogDropEvaluateEvent::ACTION:
         case LogDropStartEvent::ACTION:
         case LogDropzoneConfigureEvent::ACTION:
             $logDetails = $event->getLog()->getDetails();
             $parameters = array('resourceId' => $logDetails['dropzone']['id']);
             $url = $this->router->generate('icap_dropzone_open', $parameters, UrlGeneratorInterface::ABSOLUTE_PATH);
             /** @var Dropzone $dropzone */
             $dropzone = $this->entityManager->getRepository('IcapDropzoneBundle:Dropzone')->findOneById($logDetails['dropzone']['id']);
             $title = $dropzone->getResourceNode()->getName();
             $content = sprintf('<a href="%s" title="%s">%s</a>', $url, $title, $title);
             break;
     }
     $event->setContent($content);
     $event->stopPropagation();
 }