if r.Prefix.set && !r.Filter.IsEmpty() && r.Filter.Prefix.set {
		return errXMLNotWellFormed
	}

	if r.Filter.set {
		return r.Filter.Validate()
	}
	return nil
}

func (r Rule) validateTransition() error {
	return r.Transition.Validate()
}

func (r Rule) validateNoncurrentTransition() error {
	return r.NoncurrentVersionTransition.Validate()
}