switch VersionPurgeStatusType(rs.VersionPurgeStatusInternal) {
	case Pending, Complete, Failed: // for backward compatibility
		return VersionPurgeStatusType(rs.VersionPurgeStatusInternal)
	default:
		return getCompositeVersionPurgeStatus(rs.PurgeTargets)
	}
}

// TargetState returns replicatedInfos struct initialized with the previous state of replication
func (rs *ReplicationState) targetState(arn string) (r replicatedTargetInfo) {