type legacyRootAPIHandler struct {
	// addresses is used to build cluster IPs for discovery.
	addresses  Addresses
	apiPrefix  string
	serializer runtime.NegotiatedSerializer
}

func NewLegacyRootAPIHandler(addresses Addresses, serializer runtime.NegotiatedSerializer, apiPrefix string) *legacyRootAPIHandler {
	// Because in release 1.1, /apis returns response with empty APIVersion, we

		return err
	}

	// Install the version handler.
	// Add a handler at /<apiPrefix> to enumerate the supported api versions.
	legacyRootAPIHandler := discovery.NewLegacyRootAPIHandler(s.discoveryAddresses, s.Serializer, apiPrefix)
	if utilfeature.DefaultFeatureGate.Enabled(features.AggregatedDiscoveryEndpoint) {