PartKeepr\AuthBundle\Services\UserService::getBuiltinProvider PHP Method

    public function getBuiltinProvider()
    {
        return $this->getProviderByType(self::BUILTIN_PROVIDER);
    }

 /**
  * Create a new item.
  *
  * @param Request $request
  *
  * @return mixed
  *
  * @throws NotFoundHttpException
  * @throws RuntimeException
  * @throws UserLimitReachedException
  */
 public function __invoke(Request $request)
 {
     /**
      * @var $resourceType ResourceInterface
      */
     list($resourceType, $format) = $this->extractAttributes($request);
     if ($this->userService->checkUserLimit() === true) {
         throw new UserLimitReachedException();
     }
     /**
      * @var User $data
      */
     $data = $this->serializer->deserialize($request->getContent(), $resourceType->getEntityClass(), $format, $resourceType->getDenormalizationContext());
     $data->setProvider($this->userService->getBuiltinProvider());
     $data->setLegacy(false);
     $this->userService->syncData($data);
     $data->setNewPassword("");
     $data->setPassword("");
     return $data;
 }