final List<Integer> completeLengthChecks;
    final int baseStackDepth;
    ExecutorService service = Executors.newFixedThreadPool(5);
    try {
      // Avoid counting frames from the executor itself, or the ExecutionSequencer
      baseStackDepth =
          serializer
              .submit(
                  new Callable<Integer>() {
                    @Override

    final List<Integer> completeLengthChecks;
    final int baseStackDepth;
    ExecutorService service = Executors.newFixedThreadPool(5);
    try {
      // Avoid counting frames from the executor itself, or the ExecutionSequencer
      baseStackDepth =
          serializer
              .submit(
                  new Callable<Integer>() {
                    @Override