/**
  * @param ServiceLocatorInterface $sl
  * @return \Authorize\Service\Authorize
  */
 public function createService(ServiceLocatorInterface $sl)
 {
     $guardController = new Controller();
     /* @var $authorizeService \Authorize\Service\Authorize */
     $authorizeService = $sl->get('Authorize\\Service\\Authorize');
     $guardController->setAuthorizeService($authorizeService);
     return $guardController;
 }