async def astream_chat(self, messages: Sequence[Any], **kwargs: Any) -> Any:
        """Stream chat with the model asynchronously."""
        raise NotImplementedError("Async stream chat is not supported for this model.")
Stream chat with the model asynchronously.
llama-index-integrations/multi_modal_llms/llama-index-multi-modal-llms-bedrock/llama_index/multi_modal_llms/bedrock/base.py