DownloadManager downloadManager = new DownloadManager(getDownloadQueueFile());
downloadManager.addDownloadListener(new ChecksumSender());
downloadManager.addDownloadListener(new DownloadNotifier());
dataSourceManager = new DataSourceManager(downloadManager);
hgtFilesService = new HgtFilesService(dataSourceManager);
elevationServiceFacade = new ElevationServiceFacade();
}