public function onAfterPostComment(Comment $comment)
    {
        $parent = $comment->Parent();

        if (!$parent || !$parent->hasMethod('notificationRecipients')) {
            return;
        }

        // Ask parent to submit all recipients
        $recipients = $parent->notificationRecipients($comment);

        foreach ($recipients as $recipient) {
            $this->notifyCommentRecipient($comment, $parent, $recipient);
        }
    }