def post(self, url: str, params: QueryParamTypes = None, json: Any = None) -> Dict:
        """
        Make an Request with POST Method.
        """
        request = self._preprocess("POST", url=url, params=params, json=json)
        with httpx.Client() as client:
            r = client.send(request=request)
        r.raise_for_status()
        return self._postprocess(r)

        Make an Request with POST Method.
        
llama-index-utils/llama-index-utils-qianfan/llama_index/utils/qianfan/client.py