Doctrine\ORM\EntityManager::contains PHP Метод

    public function contains($entity)
    {
        return $this->unitOfWork->isScheduledForInsert($entity) ||
               $this->unitOfWork->isInIdentityMap($entity) &&
               ! $this->unitOfWork->isScheduledForDelete($entity);
    }

 /**
  * Processes the form and build the Response object
  *
  * @param Request $request
  * @param Organization $organization
  * @return Response|static
  * @throws BadRequestHttpException
  */
 public function processForm(Request $request, Organization $organization)
 {
     $statusCode = !$this->em->contains($organization) ? 201 : 204;
     $form = $this->container->get('form.factory')->create(OrganizationType::class, $organization);
     $formData = json_decode($request->getContent(), true);
     $form->submit($this->prepareFormData($formData));
     if (!$form->isValid()) {
         return View::create($form, 400);
     }
     if (!$this->em->contains($organization)) {
         $this->em->persist($organization);
     }
     try {
         $this->em->flush();
     } catch (\Exception $e) {
         $pdoException = $e->getPrevious();
         // unique constraint
         if ($pdoException->getCode() === '23000') {
             throw new BadRequestHttpException('Error 23000!');
         }
         throw new BadRequestHttpException('Unknown error code: ' . $pdoException->getCode());
     }
     $response = new Response();
     $response->setStatusCode($statusCode);
     if (201 === $statusCode) {
         $response->headers->set('Access-Control-Expose-Headers', 'Location');
         $response->headers->set('Location', $this->container->get('router')->generate('api_v1_get_organization', ['organization' => $organization->getId()], UrlGeneratorInterface::RELATIVE_PATH));
     }
     return $response;
 }