Set<String> getInstalledModule() {
   return downloadModuleRunnable.getInstalledModules();
 }
 Set<String> getDownloadFailed() {
   return downloadModuleRunnable.getDownloadFailed();
 }
 @Override
 protected IStatus run(final IProgressMonitor monitor) {
   downloadModuleRunnable.run(monitor);
   return Status.OK_STATUS;
 }