@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(dataset_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, dataset_);
    }
    if (((bitField0_ & 0x00000001) != 0)) {
      output.writeMessage(2, getOutputConfig());
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Required. The config for the output content.
</pre>

<code>
.google.cloud.translation.v3.DatasetOutputConfig output_config = 2 [(.google.api.field_behavior) = REQUIRED];
</code>
java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/ExportDataRequest.java