Grav\Plugin\Admin\Admin::route PHP Method

    public static function route()
    {
        $pages = Grav::instance()['pages'];
        $route = '/' . ltrim(Grav::instance()['admin']->route, '/');
        /** @var Page $page */
        $page = $pages->dispatch($route);
        $parent_route = null;
        if ($page) {
            $parent = $page->parent();
            $parent_route = $parent->rawRoute();
        }
        return $parent_route;
    }