@Override
    public List<Long> order(List<Long> insertionOrder) {
      return insertionOrder;
    }
  }

  public static class SampleLongs extends SampleElements<Long> {
    public SampleLongs() {
      super((long) 0, (long) 1, (long) 2, (long) 3, (long) 4);
    }
  }

    @Override
    public List<Long> order(List<Long> insertionOrder) {
      return insertionOrder;
    }
  }

  public static class SampleLongs extends SampleElements<Long> {
    public SampleLongs() {
      super((long) 0, (long) 1, (long) 2, (long) 3, (long) 4);
    }
  }