}

// ResourceSingularizer converts a REST resource name from plural to singular (e.g., from pods to pod)
// This implementation supports multiple REST schemas and return the first match.
func (m MultiRESTMapper) ResourceSingularizer(resource string) (singular string, err error) {
	for _, t := range m {
		singular, err = t.ResourceSingularizer(resource)
		if err == nil {
			return
		}
	}

	if err := o.init(); err != nil {
		return nil, err
	}
	return o.mapper.RESTMappings(gk, versions...)
}

func (o *lazyObject) ResourceSingularizer(resource string) (singular string, err error) {
	if err := o.init(); err != nil {
		return "", err
	}
	return o.mapper.ResourceSingularizer(resource)
}

func (o *lazyObject) Reset() {
	o.lock.Lock()
	defer o.lock.Unlock()
	if o.loaded && o.err == nil {

	return m.Delegate.RESTMappings(gk, versions...)
}

func (m PriorityRESTMapper) ResourceSingularizer(resource string) (singular string, err error) {
	return m.Delegate.ResourceSingularizer(resource)
}

func (m PriorityRESTMapper) ResourcesFor(partiallySpecifiedResource schema.GroupVersionResource) ([]schema.GroupVersionResource, error) {

	}

	return kind.GroupVersion().WithResource(singularName + "s"), singular
}

// ResourceSingularizer implements RESTMapper
// It converts a resource name from plural to singular (e.g., from pods to pod)
func (m *DefaultRESTMapper) ResourceSingularizer(resourceType string) (string, error) {
	partialResource := schema.GroupVersionResource{Resource: resourceType}

	return nil, nil
}
func (doNothingRESTMapper) RESTMappings(gk schema.GroupKind, versions ...string) ([]*meta.RESTMapping, error) {
	return nil, nil
}
func (doNothingRESTMapper) ResourceSingularizer(resource string) (singular string, err error) {
	return "", nil
}

type doNothingAdmission struct{}

	// version search is provided. Otherwise identifies a preferred resource mapping for
	// the provided version(s).
	RESTMappings(gk schema.GroupKind, versions ...string) ([]*RESTMapping, error)

	ResourceSingularizer(resource string) (singular string, err error)
}

// ResettableRESTMapper is a RESTMapper which is capable of resetting itself
// from discovery.

	kindsFor     []schema.GroupVersionKind
	resourceFor  schema.GroupVersionResource
	kindFor      schema.GroupVersionKind
	mappings     []*RESTMapping

	err error
}

func (m fixedRESTMapper) ResourceSingularizer(resource string) (singular string, err error) {
	return "", m.err
}

func (m fixedRESTMapper) ResourcesFor(resource schema.GroupVersionResource) ([]schema.GroupVersionResource, error) {

	// this ok because if the test works, this method should never be called.
	panic("test failed")
}
func (r *neverReturningRESTMapper) ResourceSingularizer(resource string) (singular string, err error) {
	// this ok because if the test works, this method should never be called.
	panic("test failed")
}

func TestGCAdmission(t *testing.T) {

		mapper := NewDefaultRESTMapper([]schema.GroupVersion{testGroupVersion})
		// create singular/plural mapping
		mapper.Add(testGroupVersion.WithKind(testCase.Kind), RESTScopeNamespace)

		singular, err := mapper.ResourceSingularizer(testCase.Plural)
		if err != nil {
			t.Errorf("%d: unexpected error: %v", i, err)
		}
		if singular != testCase.Singular {