docs: public DnsBatchResult<Page<ChangeRequest>> listChangeRequests(
        String zoneName, Dns.ChangeRequestListOption... options) {
      DnsBatchResult<Page<ChangeRequest>> result = new DnsBatchResult<>();
      Map<DnsRpc.Option, ?> optionMap = DnsImpl.optionMap(options);
      RpcBatch.Callback<ChangesListResponse> callback =
          createListChangeRequestsCallback(zoneName, result, optionMap);
      batch.addListChangeRequests(zoneName, callback, optionMap);
      return result;
    }