logger.warning(
                    f"""{field_name} was transferred to model_kwargs.
                    Please confirm that {field_name} is what you intended."""
                )
                extra[field_name] = values.pop(field_name)
        values["model_kwargs"] = extra
        return values
    @property
    def _identifying_params(self) -> Mapping[str, Any]:
        """Get the identifying parameters."""
        return {
            **{"endpoint_url": self.endpoint_url},
            **{"model_kwargs": self.model_kwargs},
        }
    @property
    def _llm_type(self) -> str:
        """Return type of llm."""
        return "modal"
    def _call(
        self,
        prompt: str,
        stop: Optional[List[str]] = None,
        run_manager: Optional[CallbackManagerForLLMRun] = None,
        **kwargs: Any,
    ) -> str:
        """Call to Modal endpoint."""
        params = self.model_kwargs or {}
        params = {**params, **kwargs}
        response = requests.post(
            url=self.endpoint_url,
            headers={
                "Content-Type": "application/json",
            },
            json={"prompt": prompt, **params},
        )
        try:
            if prompt in response.json()["prompt"]:
                response_json = response.json()
        except KeyError:
            raise ValueError("LangChain requires 'prompt' key in response.")
        text = response_json["prompt"]
        if stop is not None:
            # I believe this is required since the stop tokens
            # are not enforced by the model parameters
            text = enforce_stop_tokens(text, stop)
        return text