/**
  * POS Frontend will give 404 if pretty permalinks not active
  * - requires autoloader, ie: WC_POS()
  */
 private function permalink_check()
 {
     $fail = WC_POS_Status::permalinks_disabled();
     if ($fail) {
         $message = $fail['message'] . '. ';
         $message .= sprintf('<a href="%s">%s</a>', $fail['buttons'][0]['href'], $fail['buttons'][0]['prompt']) . ' &raquo;';
         WC_POS_Admin_Notices::add($message);
     }
 }