code: @Override
      public void writeUberBucket(final UberBucket pBucket) throws TTException {
          mService.submit(new Callable<Void>() {
              @Override
              public Void call() throws Exception {
                  mSecondWriter.writeUberBucket(pBucket);
                  return null;
              }
          });
          mFirstWriter.writeUberBucket(pBucket);
      }
docs: {@inheritDoc}