public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    return com.google.cloud.texttospeech.v1beta1.TextToSpeechProto
        .internal_static_google_cloud_texttospeech_v1beta1_StreamingSynthesizeRequest_descriptor;
  }
<pre>
Request message for the `StreamingSynthesize` method. Multiple
`StreamingSynthesizeRequest` messages are sent in one call.
The first message must contain a `streaming_config` that
fully specifies the request configuration and must not contain `input`. All
subsequent messages must only have `input` set.
</pre>

Protobuf type {@code google.cloud.texttospeech.v1beta1.StreamingSynthesizeRequest}
java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/StreamingSynthesizeRequest.java