code: public final ListDataItemsPagedResponse listDataItems(String parent, String filter) {
      DATASET_PATH_TEMPLATE.validate(parent, "listDataItems");
      ListDataItemsRequest request =
          ListDataItemsRequest.newBuilder().setParent(parent).setFilter(filter).build();
      return listDataItems(request);
    }
docs: Lists data items in a dataset. This API can be called after data are imported into dataset.
  Pagination is supported.
  
  <p>Sample code:
  
  <pre><code>
  try (DataLabelingServiceClient dataLabelingServiceClient = DataLabelingServiceClient.create()) {
  String formattedParent = DataLabelingServiceClient.formatDatasetName("[PROJECT]", "[DATASET]");
  String filter = "";
  for (DataItem element : dataLabelingServiceClient.listDataItems(formattedParent, filter).iterateAll()) {
  // doThingsWith(element);
  }
  }
  </code></pre>
  
  @param parent Required. Name of the dataset to list data items, format:
  projects/{project_id}/datasets/{dataset_id}
  @param filter Optional. Filter is not supported at this moment.
  @throws com.google.api.gax.rpc.ApiException if the remote call fails