Method fetch_impl

python/python3/tornado/httpclient.py:309–312

(
        self, request: "HTTPRequest", callback: Callable[["HTTPResponse"], None]
    )

        return future

    def fetch_impl(
        self, request: "HTTPRequest", callback: Callable[["HTTPResponse"], None]
    ) -> None:
        raise NotImplementedError()

    @classmethod
    def configure(