func hasGVKExtensionV3(extensions spec.Extensions, gvk schema.GroupVersionKind) bool {
	var oapiGVK map[string]string
	err := extensions.GetObject("x-kubernetes-group-version-kind", &oapiGVK)
	if err != nil {
		return false
	}
	if oapiGVK["group"] == gvk.Group &&
		oapiGVK["version"] == gvk.Version &&
		oapiGVK["kind"] == gvk.Kind {
		return true
	}
	return false
}