RangeSet<Integer> expected = TreeRangeSet.create();
    expected.add(Range.<Integer>all());
    expected.removeAll(rangeSet);
    return expected;
  }


  public void testSubRangeSet() {
    for (Range<Integer> range1 : QUERY_RANGES) {
      for (Range<Integer> range2 : QUERY_RANGES) {
        TreeRangeSet<Integer> rangeSet = TreeRangeSet.create();
        rangeSet.add(range1);