delegate:  delegateHandler,
	}
	establishingController := establish.NewEstablishingController(s.Informers.Apiextensions().V1().CustomResourceDefinitions(), crdClient.ApiextensionsV1())
	crdHandler, err := NewCustomResourceDefinitionHandler(
		versionDiscoveryHandler,
		groupDiscoveryHandler,
		s.Informers.Apiextensions().V1().CustomResourceDefinitions(),
		delegateHandler,
		c.ExtraConfig.CRDRESTOptionsGetter,

		CountMetricPollPeriod:   time.Minute,
	}
	if enableWatchCache {
		restOptionsGetter.Decorator = genericregistry.StorageWithCacher()
	}

	handler, err := NewCustomResourceDefinitionHandler(
		&versionDiscoveryHandler{}, &groupDiscoveryHandler{},
		crdInformer,
		http.HandlerFunc(func(http.ResponseWriter, *http.Request) {}),
		restOptionsGetter,
		dummyAdmissionImpl{},

	storageVersion string

	waitGroup *utilwaitgroup.SafeWaitGroup
}

// crdStorageMap goes from customresourcedefinition to its storage
type crdStorageMap map[types.UID]*crdInfo

func NewCustomResourceDefinitionHandler(
	versionDiscoveryHandler *versionDiscoveryHandler,
	groupDiscoveryHandler *groupDiscoveryHandler,
	crdInformer informers.CustomResourceDefinitionInformer,
	delegate http.Handler,