public static function edit_page_parameters() {
        return new external_function_parameters (
            array(
                'pageid' => new external_value(PARAM_INT, 'Page ID.'),
                'content' => new external_value(PARAM_RAW, 'Page contents.'),
                'section' => new external_value(PARAM_RAW, 'Section page title.', VALUE_DEFAULT, null)
            )
        );
    }