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
}

		if err := ValidatePolicyRule(rule, true, field.NewPath("rules").Index(i)); err != nil {
			allErrs = append(allErrs, err...)
		}
	}
	if len(allErrs) != 0 {
		return allErrs
	}
	return nil
}

func ValidateRoleUpdate(role *rbac.Role, oldRole *rbac.Role) field.ErrorList {
	allErrs := ValidateRole(role)
	allErrs = append(allErrs, validation.ValidateObjectMetaUpdate(&role.ObjectMeta, &oldRole.ObjectMeta, field.NewPath("metadata"))...)