fmt.Sprintf(`transition-date="%s", rule-id="%s"`, event.Due.Format(http.TimeFormat), event.RuleID),
		}
	}
}

// NoncurrentVersionsExpirationLimit returns the number of noncurrent versions
// to be retained from the first applicable rule per S3 behavior.
func (lc Lifecycle) NoncurrentVersionsExpirationLimit(obj ObjectOpts) Event {
	for _, rule := range lc.FilterRules(obj) {
		if rule.NoncurrentVersionExpiration.NewerNoncurrentVersions == 0 {