public static function get_context_for_userid_within_submission(int $userid, contextlist $contextlist) {
        $sql = "SELECT contextid
                  FROM {comments}
                 WHERE component = :component
                       AND commentarea = :commentarea
                       AND userid = :userid";
        $params = ['userid' => $userid, 'component' => 'assignsubmission_comments', 'commentarea' => 'submission_comments'];
        $contextlist->add_from_sql($sql, $params);
    }