func SimpleUpdate(fn SimpleUpdateFunc) UpdateFunc {
	return func(input runtime.Object, _ ResponseMeta) (runtime.Object, *uint64, error) {
		out, err := fn(input)
		return out, nil, err
	}
}

func NamespaceKeyFunc(prefix string, obj runtime.Object) (string, error) {
	meta, err := meta.Accessor(obj)
	if err != nil {
		return "", err
	}
	name := meta.GetName()
	if msgs := path.IsValidPathSegmentName(name); len(msgs) != 0 {

type setupOption func(*setupOptions)

func withDefaults(options *setupOptions) {
	prefix := "/pods"

	options.resourcePrefix = prefix
	options.keyFunc = func(obj runtime.Object) (string, error) { return storage.NamespaceKeyFunc(prefix, obj) }
	options.clock = clock.RealClock{}
}

func withClusterScopedKeyFunc(options *setupOptions) {
	options.keyFunc = func(obj runtime.Object) (string, error) {

	if ok && len(ns) > 0 {
		key = key + "/" + ns
	}
	return key
}

// NamespaceKeyFunc is the default function for constructing storage paths to
// a resource relative to the given prefix enforcing namespace rules. If the
// context does not contain a namespace, it errors.
func NamespaceKeyFunc(ctx context.Context, prefix string, name string) (string, error) {
	key := NamespaceKeyRootFunc(ctx, prefix)

}

// newTestWatchCache just adds a fake clock.
func newTestWatchCache(capacity int, indexers *cache.Indexers) *testWatchCache {
	keyFunc := func(obj runtime.Object) (string, error) {
		return storage.NamespaceKeyFunc("prefix", obj)
	}
	getAttrsFunc := func(obj runtime.Object) (labels.Set, fields.Set, error) {
		pod, ok := obj.(*v1.Pod)
		if !ok {
			return nil, nil, fmt.Errorf("not a pod")
		}

		Versioner:      storage.APIObjectVersioner{},
		GroupResource:  schema.GroupResource{Resource: "pods"},
		ResourcePrefix: prefix,
		KeyFunc:        func(obj runtime.Object) (string, error) { return storage.NamespaceKeyFunc(prefix, obj) },
		GetAttrsFunc: func(obj runtime.Object) (labels.Set, fields.Set, error) {
			pod, ok := obj.(*example.Pod)
			if !ok {
				return storage.DefaultNamespaceScopedAttr(obj)
			}