@java.lang.Override
  public com.google.cloud.texttospeech.v1beta1.StreamingSynthesisInput getInput() {
    if (streamingRequestCase_ == 2) {
      return (com.google.cloud.texttospeech.v1beta1.StreamingSynthesisInput) streamingRequest_;
    }
    return com.google.cloud.texttospeech.v1beta1.StreamingSynthesisInput.getDefaultInstance();
  }
<pre>
Input to synthesize. Specified in all messages but the first in a
`StreamingSynthesize` call.
</pre>

<code>.google.cloud.texttospeech.v1beta1.StreamingSynthesisInput input = 2;</code>

@return The input.
java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/StreamingSynthesizeRequest.java