/**
  * Create service
  *
  * @param ServiceLocatorInterface $serviceLocator
  *
  * @return LoginForm
  */
 public function createService(ServiceLocatorInterface $serviceLocator)
 {
     /**
      * @var $filter LoginFormInputFilter
      */
     $filter = $serviceLocator->get(LoginFormInputFilter::class);
     $form = new LoginForm();
     $form->setInputfilter($filter);
     return $form;
 }