private function addExtend(MenuEntry $root)
    {
        $root->add(
            MenuEntry::create('extensions')
                ->setRoute('extensions')
                ->setLabel(Trans::__('general.phrase.extensions-overview'))
                ->setIcon('fa:cubes')
                ->setPermission('extensions')
        );

        // Extension supplied entries
        $root->add(
            MenuEntry::create('custom')
                ->setRoute('extensions')
                ->setPermission('settings')
        );
    }