@java.lang.Override
  public Builder toBuilder() {
    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
  }
<pre>
Optional. Optional configuration used to automatically run translation on
the given audio to the desired language for supported models.
</pre>

<code>
.google.cloud.speech.v2.TranslationConfig translation_config = 15 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/RecognitionConfig.java