public boolean hasAudio() {
      return streamingRequestCase_ == 5;
    }
<pre>
Inline audio bytes to be Recognized.
Maximum size for this field is 15 KB per request.
</pre>

<code>bytes audio = 5;</code>

@return Whether the audio field is set.
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/StreamingRecognizeRequest.java