How to use the hyperframe.frame.AltSvcFrame function in hyperframe

max_window_size=self.local_settings.initial_window_size
        )

        # When in doubt use dict-dispatch.
        self._frame_dispatch_table = {
            HeadersFrame: self._receive_headers_frame,
            PushPromiseFrame: self._receive_push_promise_frame,
            SettingsFrame: self._receive_settings_frame,
            DataFrame: self._receive_data_frame,
            WindowUpdateFrame: self._receive_window_update_frame,
            PingFrame: self._receive_ping_frame,
            RstStreamFrame: self._receive_rst_stream_frame,
            PriorityFrame: self._receive_priority_frame,
            GoAwayFrame: self._receive_goaway_frame,
            ContinuationFrame: self._receive_naked_continuation,
            AltSvcFrame: self._receive_alt_svc_frame,
            ExtensionFrame: self._receive_unknown_frame
        }

def test_altsvc_frame_flags(self):
        f = AltSvcFrame(stream_id=0)
        flags = f.parse_flags(0xFF)

        assert flags == set()

def build_alt_svc_frame(self, stream_id, origin, field):
        """
        Builds a single ALTSVC frame.
        """
        f = AltSvcFrame(stream_id)
        f.origin = origin
        f.field = field
        return f

def advertise_alternative_service(self, field_value):
        """
        Advertise an RFC 7838 alternative service. The semantics of this are
        better documented in the ``H2Connection`` class.
        """
        self.config.logger.debug(
            "Advertise alternative service of %r for %r", field_value, self
        )
        self.state_machine.process_input(StreamInputs.SEND_ALTERNATIVE_SERVICE)
        asf = AltSvcFrame(self.stream_id)
        asf.field = field_value
        return [asf]

def test_altsvc_frame_with_origin_serializes_properly(self):
        f = AltSvcFrame(stream_id=0)
        f.origin = b'example.com'
        f.field = b'h2="alt.example.com:8000", h2=":443"'

        s = f.serialize()
        assert s == self.payload_with_origin

def advertise_alternative_service(self, field_value):
        """
        Advertise an RFC 7838 alternative service. The semantics of this are
        better documented in the ``H2Connection`` class.
        """
        self.config.logger.debug(
            "Advertise alternative service of %r for %r", field_value, self
        )
        self.state_machine.process_input(StreamInputs.SEND_ALTERNATIVE_SERVICE)
        asf = AltSvcFrame(self.stream_id)
        asf.field = field_value
        return [asf]

def __init__(self, stream_id, origin=b'', field=b'', **kwargs):
        super(AltSvcFrame, self).__init__(stream_id, **kwargs)

        if not isinstance(origin, bytes):
            raise InvalidFrameError("AltSvc origin must be bytestring.")
        if not isinstance(field, bytes):
            raise InvalidFrameError("AltSvc field must be a bytestring.")
        self.origin = origin
        self.field = field

return header + self.body


_FRAME_CLASSES = [
    DataFrame,
    HeadersFrame,
    PriorityFrame,
    RstStreamFrame,
    SettingsFrame,
    PushPromiseFrame,
    PingFrame,
    GoAwayFrame,
    WindowUpdateFrame,
    ContinuationFrame,
    AltSvcFrame,
]
#: FRAMES maps the type byte for each frame to the class used to represent that
#: frame.
FRAMES = {cls.type: cls for cls in _FRAME_CLASSES}

max_window_size=self.local_settings.initial_window_size
        )

        # When in doubt use dict-dispatch.
        self._frame_dispatch_table = {
            HeadersFrame: self._receive_headers_frame,
            PushPromiseFrame: self._receive_push_promise_frame,
            SettingsFrame: self._receive_settings_frame,
            DataFrame: self._receive_data_frame,
            WindowUpdateFrame: self._receive_window_update_frame,
            PingFrame: self._receive_ping_frame,
            RstStreamFrame: self._receive_rst_stream_frame,
            PriorityFrame: self._receive_priority_frame,
            GoAwayFrame: self._receive_goaway_frame,
            ContinuationFrame: self._receive_naked_continuation,
            AltSvcFrame: self._receive_alt_svc_frame,
            ExtensionFrame: self._receive_unknown_frame
        }