}

  private static final int ITERATION_COUNT = 50_000;
  private static final int DIRECT_EXECUTIONS_PER_THREAD = 100;

  @J2ktIncompatible
  @GwtIncompatible // threads
  public void testAvoidsStackOverflow_multipleThreads() throws Exception {
    LongHolder holder = new LongHolder();
    ArrayList<ListenableFuture<Integer>> lengthChecks = new ArrayList<>();
    List<Integer> completeLengthChecks;
    int baseStackDepth;