return m, nil
}

func (m *monitor) Close() error {
	if m.monitoringServer != nil {
		return m.monitoringServer.Close()
	}
	return nil
}

// initMonitor initializes the configuration for the pilot monitoring server.
func (s *Server) initMonitor(addr string) error { // nolint: unparam
	s.addStartFunc("monitoring", func(stop <-chan struct{}) error {
		monitor, err := startMonitor(addr, s.monitoringMux)
		if err != nil {

	if args.ServerOptions.MonitoringAddr != "" {
		s.XDSServer.AddDebugHandlers(s.httpMux, nil, args.ServerOptions.EnableProfiling, whc)
	}

	// Monitoring Server.
	if err := s.initMonitor(args.ServerOptions.MonitoringAddr); err != nil {
		return fmt.Errorf("error initializing monitor: %v", err)
	}

	// Readiness Handler.
	s.httpMux.HandleFunc("/ready", s.istiodReadyHandler)

	return nil
}