How to use the jsonrpcserver.methods function in jsonrpcserver

async def start_jsonrpc(self, config: SimpleConfig, fd):
        self.app = web.Application()
        self.app.router.add_post("/", self.handle)
        self.rpc_user, self.rpc_password = get_rpc_credentials(config)
        self.methods = jsonrpcserver.methods.Methods()
        self.methods.add(self.ping)
        self.methods.add(self.gui)
        self.methods.add(self.daemon)
        self.cmd_runner = Commands(self.config, None, self.network, self)
        for cmdname in known_commands:
            self.methods.add(getattr(self.cmd_runner, cmdname))
        self.methods.add(self.run_cmdline)
        self.host = config.get('rpchost', '127.0.0.1')
        self.port = config.get('rpcport', 0)
        self.runner = web.AppRunner(self.app)
        await self.runner.setup()
        site = web.TCPSite(self.runner, self.host, self.port)
        await site.start()
        socket = site._server.sockets[0]
        os.write(fd, bytes(repr((socket.getsockname(), time.time())), 'utf8'))
        os.close(fd)

def dispatch():
        try:
            req = json.loads(request.get_data().decode())
        except JSONDecodeError:
            return Response(
                PARSE_ERROR_RESPONSE,
                400,
                mimetype='application/json'
            )
        else:
            response = methods.dispatch(req)
            return Response(str(response),
                            response.http_status,
                            mimetype='application/json')

def dispatch():
        req = json.loads(request.get_data().decode())
        response = methods.dispatch(req)
        return Response(str(response),
                        response.http_status,
                        mimetype='application/json')

def __init__(self):
        self.methods = jsonrpcserver.methods.Methods()

def __init__(self, daemon, fd):
        rpc_user, rpc_password = get_rpc_credentials(daemon.config)
        AuthenticatedServer.__init__(self, rpc_user, rpc_password)
        self.daemon = daemon
        self.fd = fd
        self.config = daemon.config
        self.host = self.config.get('rpchost', '127.0.0.1')
        self.port = self.config.get('rpcport', 0)
        self.app = web.Application()
        self.app.router.add_post("/", self.handle)
        self.methods = jsonrpcserver.methods.Methods()
        self.methods.add(self.ping)
        self.methods.add(self.gui)
        self.cmd_runner = Commands(config=self.config, network=self.daemon.network, daemon=self.daemon)
        for cmdname in known_commands:
            self.methods.add(getattr(self.cmd_runner, cmdname))
        self.methods.add(self.run_cmdline)