/**
  * Customize the URL used for the view-list
  *
  * @since  1.0.0
  * @param  string $url The URL
  * @return string The URL
  */
 public function view_url($url)
 {
     $menu_id = MS_Controller::get_request_field('menu_id', 0, 'REQUEST');
     $url = esc_url_raw(add_query_arg('menu_id', $menu_id, $url));
     return $url;
 }