// clients.
func UnstructuredToGVR(u unstructured.Unstructured) (schema.GroupVersionResource, error) {
	res := schema.GroupVersionResource{}
	gv, err := schema.ParseGroupVersion(u.GetAPIVersion())
	if err != nil {
		return res, err
	}

	gk := config.GroupVersionKind{
		Group:   gv.Group,
		Version: gv.Version,
		Kind:    u.GetKind(),
	}
	found, ok := gvk.ToGVR(gk)

	if policy, err := v.policyGetter.GetValidatingAdmissionPolicy(ctx, binding.Spec.PolicyName); err == nil && policy.Spec.ParamKind != nil {
		paramKind := policy.Spec.ParamKind
		if gv, err := schema.ParseGroupVersion(paramKind.APIVersion); err == nil {
			// we only need to authorize the parsed group/version
			apiGroup = gv.Group
			apiVersion = gv.Version

	}

	return allErrors
}

type groupVersion struct {
	Group   string
	Version string
}

// parseGroupVersion turns "group/version" string into a groupVersion struct. It reports error
// if it cannot parse the string.
func parseGroupVersion(gv string) (groupVersion, error) {
	if (len(gv) == 0) || (gv == "/") {
		return groupVersion{}, nil
	}

	switch strings.Count(gv, "/") {

}

func (dc *DisruptionController) getScaleController(ctx context.Context, controllerRef *metav1.OwnerReference, namespace string) (*controllerAndScale, error) {
	gv, err := schema.ParseGroupVersion(controllerRef.APIVersion)
	if err != nil {
		return nil, err
	}

	gk := schema.GroupKind{
		Group: gv.Group,
		Kind:  controllerRef.Kind,
	}

}

func (c *TypeChecker) paramsGVK(policy *v1.ValidatingAdmissionPolicy) schema.GroupVersionKind {
	if policy.Spec.ParamKind == nil {
		return schema.GroupVersionKind{}
	}
	gv, err := schema.ParseGroupVersion(policy.Spec.ParamKind.APIVersion)
	if err != nil {
		return schema.GroupVersionKind{}
	}
	return gv.WithKind(policy.Spec.ParamKind.Kind)
}

	deletableGroupVersionResources := map[schema.GroupVersionResource]struct{}{}
	for _, rl := range deletableResources {
		gv, err := schema.ParseGroupVersion(rl.GroupVersion)
		if err != nil {
			logger.Info("ignoring invalid discovered resource", "groupversion", rl.GroupVersion, "error", err)
			continue
		}
		for i := range rl.APIResources {

// once it is determined they do not have backing objects in storage
func (gb *GraphBuilder) enqueueVirtualDeleteEvent(ref objectReference) {
	gv, _ := schema.ParseGroupVersion(ref.APIVersion)
	gb.graphChanges.Add(&event{
		virtual:   true,
		eventType: deleteEvent,
		gvk:       gv.WithKind(ref.Kind),
		obj: &metaonly.MetadataOnlyObject{

	for _, tweak := range tweaks {
		n = tweak(n)
	}
	return n
}

func makeAddEvent(identity objectReference, owners ...objectReference) *event {
	gv, err := schema.ParseGroupVersion(identity.APIVersion)
	if err != nil {
		panic(err)
	}
	return &event{
		eventType: addEvent,
		gvk:       gv.WithKind(identity.Kind),
		obj:       makeObj(identity, owners...),
	}
}

	hpa := hpaShared.DeepCopy()
	hpaStatusOriginal := hpa.Status.DeepCopy()

	reference := fmt.Sprintf("%s/%s/%s", hpa.Spec.ScaleTargetRef.Kind, hpa.Namespace, hpa.Spec.ScaleTargetRef.Name)

	targetGV, err := schema.ParseGroupVersion(hpa.Spec.ScaleTargetRef.APIVersion)
	if err != nil {
		a.eventRecorder.Event(hpa, v1.EventTypeWarning, "FailedGetScale", err.Error())

		Object: runtime.RawExtension{Object: obj},
	}

	controllerRef := metav1.GetControllerOf(obj)
	controllerName := "<none>"
	if controllerRef != nil {
		withKind := true
		gv, err := schema.ParseGroupVersion(controllerRef.APIVersion)
		if err != nil {
			return nil, err
		}
		gvk := gv.WithKind(controllerRef.Kind)
		controllerName = formatResourceName(gvk.GroupKind(), controllerRef.Name, withKind)
	}