public function createService(ServiceLocatorInterface $serviceLocator)
 {
     $options = new ModuleOptions();
     $config = $serviceLocator->get('Config');
     if (isset($config[self::KEY]) && is_array($config[self::KEY])) {
         $options->setFromArray($config[self::KEY]);
     }
     if (!$options->getSerieTokenEntityClass()) {
         $options->setSerieTokenEntityClass('JwPersistentUser\\Model\\SerieToken');
     }
     return $options;
 }