static function add_page(
			$page_title,
			$menu_title,
			$capability,
			$menu_slug,
			$function = '',
			$icon_url = '',
			$position = null
		) {
			$fn = 'add_menu' . '_page';

			return $fn(
				$page_title,
				$menu_title,
				$capability,
				$menu_slug,
				$function,
				$icon_url,
				$position
			);
		}