private function createQueue($id)
 {
     $redis = $this->createRedisBackend();
     $queue = new Queue($redis, $id);
     $queue->setNumberOfRequestsToProcessAtSameTime(3);
     return $queue;
 }
 /**
  * External use only for tests
  * @internal
  *
  * @param int $id
  * @return Queue
  */
 public function createQueue($id)
 {
     $queue = new Queue($this->backend, $id);
     $queue->setNumberOfRequestsToProcessAtSameTime($this->numRequestsToProcessInBulk);
     return $queue;
 }