langchain/llms/databricks.py/_DatabricksServingEndpointClient/post
class _DatabricksServingEndpointClient:    def post(self, request: Any) -> Any:
        # See https://docs.databricks.com/machine-learning/model-serving/score-model-serving-endpoints.html
        wrapped_request = {"dataframe_records": [request]}
        response = self.post_raw(wrapped_request)["predictions"]
        # For a single-record query, the result is not a list.
        if isinstance(response, list):
            response = response[0]
        return response