code: public function count($queue)
      {
          // @todo remove hard-coded project
          $response = $this->client->request->get(
              $this->apiEndpoint.'/projects/'.$this->params['project'].'/queues/'.$queue
          );
  
          return $this->client->getBody($response);
      }
docs: List details for an indexed server, or all servers if id is null.
  
  @param string $queue
  @return integer