public static com.google.cloud.speech.v1.RecognizeRequest getDefaultInstance() {
    return DEFAULT_INSTANCE;
  }
<pre>
Required. The audio data to be recognized.
</pre>

<code>
.google.cloud.speech.v1.RecognitionAudio audio = 2 [(.google.api.field_behavior) = REQUIRED];
</code>
java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/RecognizeRequest.java