func (strategy) ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList {
	newObj := obj.(*rbac.Role)
	errorList := validation.ValidateRole(newObj)
	return append(errorList, validation.ValidateRoleUpdate(newObj, old.(*rbac.Role))...)
}

// WarningsOnUpdate returns warnings for the given update.
func (strategy) WarningsOnUpdate(ctx context.Context, obj, old runtime.Object) []string {
	return nil
}