private void logNoFiles(Object obj) {
   String message = obj.getClass().getSimpleName() + " skipped as there are no files to download";
   Launcher.getInstance().getLog().log(message);
 }
 public void downloadArtifacts() {
   for (Downloadable d : artifacts) {
     Launcher.getInstance().getDownloads().addDownload(d);
   }
 }