limiter.acquire(); // #1
    }
    stopwatch.sleepMillis(500); // #2: to repay for the last acquire
    stopwatch.sleepMillis(4000); // #3: becomes cold again
    for (int i = 0; i < 8; i++) {
      limiter.acquire(); // // #4
    }
    stopwatch.sleepMillis(500); // #5: to repay for the last acquire
    stopwatch.sleepMillis(2000); // #6: didn't get cold! It would take another 2 seconds to go cold

      limiter.acquire(); // #1
    }
    stopwatch.sleepMillis(500); // #2: to repay for the last acquire
    stopwatch.sleepMillis(4000); // #3: becomes cold again
    for (int i = 0; i < 8; i++) {
      limiter.acquire(); // // #4
    }
    stopwatch.sleepMillis(500); // #5: to repay for the last acquire
    stopwatch.sleepMillis(2000); // #6: didn't get cold! It would take another 2 seconds to go cold

      super(tMinus);
    }

    @Override
    protected void doAction() {}
  }

  private static void sleepSuccessfully(long sleepMillis) {
    Completion completed = new Completion(sleepMillis - SLEEP_SLACK);
    Uninterruptibles.sleepUninterruptibly(sleepMillis, MILLISECONDS);
    completed.assertCompletionExpected();
  }

  private static void assertTimeNotPassed(Stopwatch stopwatch, long timelimitMillis) {