@java.lang.Override
  public com.google.protobuf.ByteString getContent() {
    if (audioSourceCase_ == 1) {
      return (com.google.protobuf.ByteString) audioSource_;
    }
    return com.google.protobuf.ByteString.EMPTY;
  }
<pre>
The audio data bytes encoded as specified in
`RecognitionConfig`. Note: as with all bytes fields, proto buffers use a
pure binary representation, whereas JSON representations use base64.
</pre>

<code>bytes content = 1;</code>

@return The content.
java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/RecognitionAudio.java