Laracasts\Flash\FlashNotifier::warning PHP Method

    public function warning($message)
    {
        $this->message($message, 'warning');
        return $this;
    }

 /**
  * Flash a warning message.
  *
  * @param string $message
  * @return $this 
  * @static 
  */
 public static function warning($message)
 {
     return \Laracasts\Flash\FlashNotifier::warning($message);
 }