class OfferDiffService {

    public OfferDiffStatus getLastOfferDiffStatus() {
        OfferDiffProcess offerDiffProcess = lastOfferDiffProcess.get();
        if (offerDiffProcess == null) {
            return null;
        } else {
            return offerDiffProcess.getOfferDiffStatus();
        }
    }

    public  OfferDiffService(StorageDistribution distribution);

}