code: public void startForeground(final int id, final Notification notification) {
          if (FileDownloader.getImpl().isServiceConnected()) {
              FileDownloader.getImpl().startForeground(id, notification);
              return;
          }
  
          final ConnectSubscriber subscriber = new ConnectSubscriber() {
              @Override
              public void connected() {
                  FileDownloader.getImpl().startForeground(id, notification);
              }
  
              @Override
              public Object getValue() {
                  return null;
              }
          };
  
          wait(subscriber);
      }
docs: The {@link FileDownloader#startForeground(int, Notification)} request.