@java.lang.Override
  public Builder toBuilder() {
    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
  }
<pre>
Required. The language code to translate to.
</pre>

<code>string target_language = 1 [(.google.api.field_behavior) = REQUIRED];</code>

@return The bytes for targetLanguage.
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/TranslationConfig.java