}
				handlers = append(handlers, handlerRegistration)
			}
		case framework.ResourceClass:
			if utilfeature.DefaultFeatureGate.Enabled(features.DynamicResourceAllocation) {
				if handlerRegistration, err = informerFactory.Resource().V1alpha2().ResourceClasses().Informer().AddEventHandler(
					buildEvtResHandler(at, framework.ResourceClass, "ResourceClass"),
				); err != nil {
					return err
				}

	if utilfeature.DefaultFeatureGate.Enabled(features.DynamicResourceAllocation) {
		kubeSchedulerRules = append(kubeSchedulerRules,
			rbacv1helpers.NewRule(Read...).Groups(resourceGroup).Resources("resourceclasses").RuleOrDie(),
			rbacv1helpers.NewRule(ReadUpdate...).Groups(resourceGroup).Resources("resourceclaims").RuleOrDie(),
			rbacv1helpers.NewRule(ReadUpdate...).Groups(resourceGroup).Resources("resourceclaims/status").RuleOrDie(),

	scenarios := map[string]struct {
		oldClass     *resource.ResourceClass
		update       func(class *resource.ResourceClass) *resource.ResourceClass
		wantFailures field.ErrorList
	}{
		"valid-no-op-update": {
			oldClass: validClass,
			update:   func(class *resource.ResourceClass) *resource.ResourceClass { return class },
		},
		"update-driver": {
			oldClass: validClass,

	if resourceClass.SuitableNodes != nil {
		allErrs = append(allErrs, corevalidation.ValidateNodeSelector(resourceClass.SuitableNodes, field.NewPath("suitableNodes"))...)
	}

	return allErrs
}

// ValidateClassUpdate tests if an update to ResourceClass is valid.
func ValidateClassUpdate(resourceClass, oldClass *resource.ResourceClass) field.ErrorList {

  // same fields as in a ResourceClaim are also valid here.
  optional ResourceClaimSpec spec = 2;
}

// ResourceClass is used by administrators to influence how resources
// are allocated.
//
// This is an alpha type and requires enabling the DynamicResourceAllocation
// feature gate.
message ResourceClass {
  // Standard object metadata
  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;

	Items []PodSchedulingContext
}

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

// ResourceClass is used by administrators to influence how resources
// are allocated.
//
// This is an alpha type and requires enabling the DynamicResourceAllocation
// feature gate.
type ResourceClass struct {
	metav1.TypeMeta
	// Standard object metadata
	// +optional
	metav1.ObjectMeta

  // same fields as in a ResourceClaim are also valid here.
  optional ResourceClaimSpec spec = 2;
}

// ResourceClass is used by administrators to influence how resources
// are allocated.
//
// This is an alpha type and requires enabling the DynamicResourceAllocation
// feature gate.
message ResourceClass {
  // Standard object metadata
  // +optional

func (in *ResourceClass) DeepCopy() *ResourceClass {
	if in == nil {
		return nil
	}
	out := new(ResourceClass)
	in.DeepCopyInto(out)
	return out
}

// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
func (in *ResourceClass) DeepCopyObject() runtime.Object {

func (in *ResourceClass) DeepCopy() *ResourceClass {
	if in == nil {
		return nil
	}
	out := new(ResourceClass)
	in.DeepCopyInto(out)
	return out
}

// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
func (in *ResourceClass) DeepCopyObject() runtime.Object {

	"":                  "ResourceClaimSpec defines how a resource is to be allocated.",
	"resourceClassName": "ResourceClassName references the driver and additional parameters via the name of a ResourceClass that was created as part of the driver deployment.",