Method set_extra_headers

tornado/web.py:3139–3141

For subclass to add extra headers to the response

(self, path: str)

            return "application/octet-stream"

    def set_extra_headers(self, path: str) -> None:
        """For subclass to add extra headers to the response"""
        pass

    def get_cache_time(
        self, path: str, modified: Optional[datetime.datetime], mime_type: str