code: def html_result(html: str,
                  extraheaders: TYPE_WSGI_RESPONSE_HEADERS = None) \
          -> WSGI_TUPLE_TYPE:
      
      extraheaders = extraheaders or []
      return 'text/html; charset=utf-8', extraheaders, html.encode("utf-8")
docs: Returns ``(contenttype, extraheaders, data)`` tuple for UTF-8 HTML.