// 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

	var ret []authorizer.AttributesRecord
	groupVersion, err := schema.ParseGroupVersion(ref.APIVersion)
	if err != nil {
		return ret, err
	}
	mappings, err := a.restMapper.RESTMappings(schema.GroupKind{Group: groupVersion.Group, Kind: ref.Kind}, groupVersion.Version)
	if err != nil {

	}

	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,
	}

		}

		var parsedParamKind *schema.GroupVersionKind
		policyAccessor := s.newPolicyAccessor(policySpec)

		if paramKind := policyAccessor.GetParamKind(); paramKind != nil {
			groupVersion, err := schema.ParseGroupVersion(paramKind.APIVersion)
			if err != nil {
				errs = append(errs, fmt.Errorf("failed to parse paramKind APIVersion: %w", err))
				continue
			}
			parsedParamKind = &schema.GroupVersionKind{

}

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{

		return nil, err
	}
	unknownFieldPaths = append(unknownFieldPaths, metaUnknownFields...)

	// compare group and kind because also other object like DeleteCollection options pass through here
	gv, err := schema.ParseGroupVersion(apiVersion)
	if err != nil {
		return nil, err
	}

	if gv.Group == v.structuralSchemaGK.Group && kind == v.structuralSchemaGK.Kind {
		if !v.preserveUnknownFields {