public static function complete_tour_parameters() {
        return new external_function_parameters([
            'tourid'    => new external_value(PARAM_INT, 'Tour ID'),
            'context'   => new external_value(PARAM_INT, 'Context ID'),
            'pageurl'   => new external_value(PARAM_LOCALURL, 'Page URL'),
            'stepid'    => new external_value(PARAM_INT, 'Step ID'),
            'stepindex' => new external_value(PARAM_INT, 'Step Number'),
        ]);
    }