}

	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}

	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 {