code: protected function configureBehavior($behavior, EventSubscriber $es)
  	{
  		switch ($behavior) {
  			case 'translatable':
  				$es->setTranslatableLocale(\Config::get('language', 'en'));
  				$es->setDefaultLocale(\Config::get('language_fallback', 'en'));
  				break;
  		}
  	}
docs: Configures Behavior Subscriber
  
  @param  string          $behavior
  @param  EventSubscriber $es