App\Libraries\OsuAuthorize::checkForumTopicWatchAdd PHP Method

    public function checkForumTopicWatchAdd($user, $topic)
    {
        $this->ensureLoggedIn($user);
        $this->ensureCleanRecord($user);
        if (!$this->doCheckUser($user, 'ForumView', $topic->forum)->can()) {
            return 'forum.topic.watch.no_forum_access';
        }
        return 'ok';
    }