protected function convertDrupalItem($router_item) {
    $route = array(
      '_controller' => $router_item['page_callback']
    );
    // Place argument defaults on the route.
    foreach ($router_item['page_arguments'] as $k => $v) {
      $route['node'] = $v;
    }
    $path = explode('/', $router_item['path']);
    $i = 0;
    foreach ($path as $element_key => $element) {
      if ($element == '%') {
        $path[$element_key] = "{element$i}";
      }
      $i++;
    }
    return new Route(implode('/', $path), $route);
  }