// ensure libs have a chance to globally register their flags
	_ "k8s.io/apiserver/pkg/admission"
)

// AddCustomGlobalFlags explicitly registers flags that internal packages register
// against the global flagsets from "flag". We do this in order to prevent
// unwanted flags from leaking into the kube-apiserver's flagset.
func AddCustomGlobalFlags(fs *pflag.FlagSet) {
	// Lookup flags in global flag set and re-register the values with our flagset.

	// flags.CommandLine.
	nfs := namedFlagSets.FlagSet("test")
	nfs.SetNormalizeFunc(cliflag.WordSepNormalizeFunc)
	globalflag.AddGlobalFlags(nfs, "test-cmd")
	AddCustomGlobalFlags(nfs)

	actualFlag := []string{}
	nfs.VisitAll(func(flag *pflag.Flag) {
		actualFlag = append(actualFlag, flag.Name)
	})

	// Get all flags from flags.CommandLine, except flag `test.*`.

	fs := cmd.Flags()
	namedFlagSets := s.Flags()
	verflag.AddFlags(namedFlagSets.FlagSet("global"))
	globalflag.AddGlobalFlags(namedFlagSets.FlagSet("global"), cmd.Name(), logs.SkipLoggingConfigurationFlags())
	options.AddCustomGlobalFlags(namedFlagSets.FlagSet("generic"))
	for _, f := range namedFlagSets.FlagSets {
		fs.AddFlagSet(f)
	}

	cols, _, _ := term.TerminalSize(cmd.OutOrStdout())
	cliflag.SetUsageAndHelpFunc(cmd, namedFlagSets, cols)