if roleBinding.RoleRef.APIGroup != rbac.GroupName {
		allErrs = append(allErrs, field.NotSupported(field.NewPath("roleRef", "apiGroup"), roleBinding.RoleRef.APIGroup, []string{rbac.GroupName}))
	}

	switch roleBinding.RoleRef.Kind {
	case "Role", "ClusterRole":
	default:
		allErrs = append(allErrs, field.NotSupported(field.NewPath("roleRef", "kind"), roleBinding.RoleRef.Kind, []string{"Role", "ClusterRole"}))

			name: "ClusterRoleBindings already exists",
			client: newMockClusterRoleBinddingClientForTest(t, &rbac.ClusterRoleBinding{
				ObjectMeta: metav1.ObjectMeta{
					Name: constants.NodeKubeletBootstrap,
				},
				RoleRef: rbac.RoleRef{
					APIGroup: rbac.GroupName,
					Kind:     "ClusterRole",
					Name:     constants.NodeBootstrapperClusterRoleName,
				},
				Subjects: []rbac.Subject{
					{
						Kind: rbac.GroupKind,

			F: "roleRef.kind",
		},
		"reference role": {
			A: rbac.ClusterRoleBinding{
				ObjectMeta: metav1.ObjectMeta{Name: "default"},
				RoleRef:    rbac.RoleRef{APIGroup: rbac.GroupName, Kind: "Role", Name: "valid"},
			},
			T: field.ErrorTypeNotSupported,
			F: "roleRef.kind",
		},
		"zero-length name": {
			A: rbac.ClusterRoleBinding{
				ObjectMeta: metav1.ObjectMeta{},

	return apiclient.CreateOrUpdateClusterRoleBinding(client, &rbac.ClusterRoleBinding{
		ObjectMeta: metav1.ObjectMeta{
			Name: constants.NodeKubeletBootstrap,
		},
		RoleRef: rbac.RoleRef{
			APIGroup: rbac.GroupName,
			Kind:     "ClusterRole",
			Name:     constants.NodeBootstrapperClusterRoleName,
		},
		Subjects: []rbac.Subject{
			{
				Kind: rbac.GroupKind,

    annotations:
      rbac.authorization.kubernetes.io/autoupdate: "true"
    creationTimestamp: null
    labels:
      kubernetes.io/bootstrapping: rbac-defaults
    name: system:controller:attachdetach-controller
  roleRef:
    apiGroup: rbac.authorization.k8s.io
    kind: ClusterRole
    name: system:controller:attachdetach-controller
  subjects:
  - kind: ServiceAccount
    name: attachdetach-controller
    namespace: kube-system

	Subjects []Subject `json:"subjects,omitempty" protobuf:"bytes,2,rep,name=subjects"`

	// RoleRef can reference a Role in the current namespace or a ClusterRole in the global namespace.
	// If the RoleRef cannot be resolved, the Authorizer must return an error.
	// This field is immutable.
	RoleRef RoleRef `json:"roleRef" protobuf:"bytes,3,opt,name=roleRef"`
}

// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object

  // Subjects holds references to the objects the role applies to.
  // +optional
  repeated Subject subjects = 2;

  // RoleRef can only reference a ClusterRole in the global namespace.
  // If the RoleRef cannot be resolved, the Authorizer must return an error.
  optional RoleRef roleRef = 3;
}

// ClusterRoleBindingList is a collection of ClusterRoleBindings
message ClusterRoleBindingList {
  // Standard object's metadata.

	clusterRoleBinding := obj.(*rbac.ClusterRoleBinding)
	if rbacregistry.BindingAuthorized(ctx, clusterRoleBinding.RoleRef, metav1.NamespaceNone, s.authorizer) {
		return s.StandardStorage.Create(ctx, obj, createValidation, options)
	}

	v1RoleRef := rbacv1.RoleRef{}
	err := rbacv1helpers.Convert_rbac_RoleRef_To_v1_RoleRef(&clusterRoleBinding.RoleRef, &v1RoleRef, nil)
	if err != nil {
		return nil, err
	}

		return err
	}
	if err := s.AddGeneratedConversionFunc((*v1alpha1.RoleRef)(nil), (*rbac.RoleRef)(nil), func(a, b interface{}, scope conversion.Scope) error {
		return Convert_v1alpha1_RoleRef_To_rbac_RoleRef(a.(*v1alpha1.RoleRef), b.(*rbac.RoleRef), scope)
	}); err != nil {
		return err
	}
	if err := s.AddGeneratedConversionFunc((*rbac.RoleRef)(nil), (*v1alpha1.RoleRef)(nil), func(a, b interface{}, scope conversion.Scope) error {

	}); err != nil {
		return err
	}
	if err := s.AddGeneratedConversionFunc((*v1.RoleRef)(nil), (*rbac.RoleRef)(nil), func(a, b interface{}, scope conversion.Scope) error {
		return Convert_v1_RoleRef_To_rbac_RoleRef(a.(*v1.RoleRef), b.(*rbac.RoleRef), scope)
	}); err != nil {
		return err
	}
	if err := s.AddGeneratedConversionFunc((*rbac.RoleRef)(nil), (*v1.RoleRef)(nil), func(a, b interface{}, scope conversion.Scope) error {