code: public final DataItem getDataItem(String name) {
      DATA_ITEM_PATH_TEMPLATE.validate(name, "getDataItem");
      GetDataItemRequest request = GetDataItemRequest.newBuilder().setName(name).build();
      return getDataItem(request);
    }
docs: Gets a data item in a dataset by resource name. This API can be called after data are imported
  into dataset.
  
  <p>Sample code:
  
  <pre><code>
  try (DataLabelingServiceClient dataLabelingServiceClient = DataLabelingServiceClient.create()) {
  String formattedName = DataLabelingServiceClient.formatDataItemName("[PROJECT]", "[DATASET]", "[DATA_ITEM]");
  DataItem response = dataLabelingServiceClient.getDataItem(formattedName);
  }
  </code></pre>
  
  @param name Required. The name of the data item to get, format:
  projects/{project_id}/datasets/{dataset_id}/dataItems/{data_item_id}
  @throws com.google.api.gax.rpc.ApiException if the remote call fails