* @param integer $recipient recipient id, default 0
* @param string $body message body, default empty
* @param string $subject message subject, default empty
* @param integer $recipient recipient id, default 0
* @param string $body message body, default empty
* @param string $subject message subject, default empty
- public static function send(int $sender_uid = 0, int $recipient = 0, string $body = '', string $subject = '', string $replyto = ''): int
+ public static function send(int $sender_uid, int $recipient = 0, string $body = '', string $subject = '', string $replyto = ''): int