code: function unHookGetItemURL (rs) {
    if (!rs._origBaseClientGetItemURL) { return; }
    BaseClient.prototype.getItemURL = rs._origBaseClientGetItemURL;
    delete rs._origBaseClientGetItemURL;
  }
docs: Restore BaseClient's getItemURL original implementation
  
  @param {object} rs - RemoteStorage instance
  
  @private