@java.lang.Override
  public com.google.cloud.speech.v2.AutoDetectDecodingConfigOrBuilder
      getAutoDecodingConfigOrBuilder() {
    if (decodingConfigCase_ == 7) {
      return (com.google.cloud.speech.v2.AutoDetectDecodingConfig) decodingConfig_;
    }
    return com.google.cloud.speech.v2.AutoDetectDecodingConfig.getDefaultInstance();
  }
<pre>
Automatically detect decoding parameters.
Preferred for supported formats.
</pre>

<code>.google.cloud.speech.v2.AutoDetectDecodingConfig auto_decoding_config = 7;</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/RecognitionConfig.java