// there is no resource version specified in the object.
	AllowUnconditionalUpdate() bool
}

// TODO: add other common fields that require global validation.
func validateCommonFields(obj, old runtime.Object, strategy RESTUpdateStrategy) (field.ErrorList, error) {
	allErrs := field.ErrorList{}
	objectMeta, err := meta.Accessor(obj)
	if err != nil {