for (int i = 0; i < nThreads; i++) {
      resultList.add(result.get(i));
    }
    return resultList;
  }

  public void testAsMapDuringLoading() throws InterruptedException, ExecutionException {
    final CountDownLatch getStartedSignal = new CountDownLatch(2);
    final CountDownLatch letGetFinishSignal = new CountDownLatch(1);