public com.google.cloud.texttospeech.v1.SynthesizeSpeechResponse synthesizeSpeech(
        com.google.cloud.texttospeech.v1.SynthesizeSpeechRequest request) {
      return io.grpc.stub.ClientCalls.blockingUnaryCall(
          getChannel(), getSynthesizeSpeechMethod(), getCallOptions(), request);
    }
<pre>
Synthesizes speech synchronously: receive results after all text input
has been processed.
</pre>
java-texttospeech/grpc-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/TextToSpeechGrpc.java