private function isAllowedPath($path) {
    $unallowed_paths = [
      '/user/logout',
      '/ajax',
    ];
    foreach ($unallowed_paths as $unallowed_path) {
      if ($unallowed_path === substr($path, 0, strlen($unallowed_path))) {
        return FALSE;
      }
    }
    return TRUE;
  }