public static function get_userids_from_context(\core_privacy\local\request\userlist $userlist) {
        $context = $userlist->get_context();
        if ($context->contextlevel != CONTEXT_MODULE) {
            return;
        }
        comments_provider::get_users_in_context_from_sql($userlist, 'c', 'assignsubmission_comments', 'submission_comments',
                $context->id);
    }