public SingleInstrumentDownloadService(IExchange exchange, IBatchNumberService batchService,
                                        IFilePathService filePathService, IEventSavingService seriesAppendingService)
 {
     this.exchange               = exchange;
     this.batchService           = batchService;
     this.filePathService        = filePathService;
     this.seriesAppendingService = seriesAppendingService;
 }
 public SingleInstrumentDownloadServiceDryRun(IBatchNumberService batchService)
 {
     this.batchService = batchService;
 }