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classOpenAITTSModel(TTSModel):"""A text-to-speech model for OpenAI."""def__init__(self,model:str,openai_client:AsyncOpenAI,):"""Create a new OpenAI text-to-speech model.        Args:            model: The name of the model to use.            openai_client: The OpenAI client to use.        """self.model=modelself._client=openai_client@propertydefmodel_name(self)->str:returnself.modelasyncdefrun(self,text:str,settings:TTSModelSettings)->AsyncIterator[bytes]:"""Run the text-to-speech model.        Args:            text: The text to convert to speech.            settings: The settings to use for the text-to-speech model.        Returns:            An iterator of audio chunks.        """response=self._client.audio.speech.with_streaming_response.create(model=self.model,voice=settings.voiceorDEFAULT_VOICE,input=text,response_format="pcm",extra_body={"instructions":settings.instructions,},)asyncwithresponseasstream:asyncforchunkinstream.iter_bytes(chunk_size=1024):yieldchunk