func addCredentialProviderFlags(fs *pflag.FlagSet) {
	// lookup flags in global flag set and re-register the values with our flagset
	local := pflag.NewFlagSet(os.Args[0], pflag.ExitOnError)

	fs.AddFlagSet(local)

	registerDeprecated(global, local, "storage_driver_buffer_duration", deprecated)
	registerDeprecated(global, local, "containerd-namespace", deprecated)

	// finally, add cadvisor flags to the provided flagset
	fs.AddFlagSet(local)

	}

	fs := pflag.NewFlagSet("test", pflag.PanicOnError)

	opts := options.NewOptions()
	nfs := opts.Flags
	for _, f := range nfs.FlagSets {
		fs.AddFlagSet(f)
	}
	fs.Parse(customFlags)

	if opts.SecureServing.BindPort != 0 {
		opts.SecureServing.Listener, opts.SecureServing.BindPort, err = createListenerOnFreePort()
		if err != nil {

	}
	all, disabled, aliases := app.KnownControllers(), app.ControllersDisabledByDefault(), app.ControllerAliases()
	namedFlagSets := s.Flags(all, disabled, aliases)
	for _, f := range namedFlagSets.FlagSets {
		fs.AddFlagSet(f)
	}
	fs.Parse(customFlags)

	if s.SecureServing.BindPort != 0 {
		s.SecureServing.Listener, s.SecureServing.BindPort, err = createListenerOnFreePort()
		if err != nil {