}

		if len(groupName) == 0 {
			// the legacy group for core APIs is special that it is installed into /api via this special install method.
			if err := s.GenericAPIServer.InstallLegacyAPIGroup(genericapiserver.DefaultLegacyAPIPrefix, &apiGroupInfo); err != nil {
				return fmt.Errorf("error in registering legacy API: %w", err)
			}
		} else {
			// everything else goes to /apis

	}

	return nil
}

// InstallLegacyAPIGroup exposes the given legacy api group in the API.
// The <apiGroupInfo> passed into this function shouldn't be used elsewhere as the
// underlying storage will be destroyed on this servers shutdown.
func (s *GenericAPIServer) InstallLegacyAPIGroup(apiPrefix string, apiGroupInfo *APIGroupInfo) error {
	if !s.legacyAPIGroupPrefixes.Has(apiPrefix) {

		testAPI(schema.GroupVersion{Group: "", Version: "v1"}),
		testAPI(schema.GroupVersion{Group: extensionsGroupName, Version: "v1"}),
		testAPI(schema.GroupVersion{Group: "batch", Version: "v1"}),
	}

	err = s.InstallLegacyAPIGroup("/apiPrefix", &apis[0])
	assert.NoError(err)
	groupPaths := []string{
		config.LegacyAPIGroupPrefixes.List()[0], // /apiPrefix
	}
	for _, api := range apis[1:] {
		err = s.InstallAPIGroup(&api)

	ReadyzChecks []healthz.HealthChecker
	// LegacyAPIGroupPrefixes is used to set up URL parsing for authorization and for validating requests
	// to InstallLegacyAPIGroup. New API servers don't generally have legacy groups at all.
	LegacyAPIGroupPrefixes sets.String
	// RequestInfoResolver is used to assign attributes (used by admission and authorization) based on a request URL.