text: public virtual SynthesizeSpeechResponse SynthesizeSpeech(SynthesizeSpeechRequest request){var options = new InvokeOptions();options.RequestMarshaller = SynthesizeSpeechRequestMarshaller.Instance;options.ResponseUnmarshaller = SynthesizeSpeechResponseUnmarshaller.Instance;return Invoke<SynthesizeSpeechResponse>(request, options);}