public function displayAction($display = 'html')
    {
        $site   = $this->get('ucms_site.manager')->getContext();
        $menus  = $this->get('umenu.menu_storage')->loadWithConditions(['site_id' => $site->getId()]);

        if ('xml' === $display) {
            return $this->displayXML($menus);
        }

        return $this->displayHTML($menus);
    }