@type t() :: %Nvidia.Riva.Nmt.StreamingTranslateSpeechToSpeechResponse{
  __unknown_fields__: [
    {field_number :: integer(), Protobuf.Wire.Types.wire_type(),
     value :: term()}
  ],
  id: Nvidia.Riva.RequestId.t() | nil,
  speech: Nvidia.Riva.Tts.SynthesizeSpeechResponse.t() | nil
}