for (int i = 0; i < 10000; i++) {
      stripedLock.get(new Object()).lock();
      // nothing special (e.g. an exception) happens
    }
  }

  public void testBulkGetReturnsSorted() {
    for (Striped<?> striped : allImplementations()) {
      Map<Object, Integer> indexByLock = new HashMap<>();
      for (int i = 0; i < striped.size(); i++) {
        indexByLock.put(striped.getAt(i), i);

    for (int i = 0; i < 10000; i++) {
      stripedLock.get(new Object()).lock();
      // nothing special (e.g. an exception) happens
    }
  }

  public void testBulkGetReturnsSorted() {
    for (Striped<?> striped : allImplementations()) {
      Map<Object, Integer> indexByLock = new HashMap<>();
      for (int i = 0; i < striped.size(); i++) {
        indexByLock.put(striped.getAt(i), i);