Method transform_first_chunk

tornado/web.py:3275–3282

(
        self,
        status_code: int,
        headers: httputil.HTTPHeaders,
        chunk: bytes,
        finishing: bool,
    )

        pass

    def transform_first_chunk(
        self,
        status_code: int,
        headers: httputil.HTTPHeaders,
        chunk: bytes,
        finishing: bool,
    ) -> Tuple[int, httputil.HTTPHeaders, bytes]:
        return status_code, headers, chunk

    def transform_chunk(self, chunk: bytes, finishing: bool) -> bytes:
        return chunk