mapdev\FacebookMessenger\Exceptions\CouldNotCreateMessage::textExceedsMaximumLength PHP Метод

    public static function textExceedsMaximumLength($max_len)
    {
        return new static('String Parameter exceeds length of ' . $max_len);
    }

 public static function checkStringLength($string, $max_len)
 {
     if (strlen($string) > $max_len) {
         throw CouldNotCreateMessage::textExceedsMaximumLength($max_len);
     }
     return $string;
 }