private static List<Reference> expected = refs("1", "1.0", "1.1", "1.1.1",
"2", "2.0", "2.2", "2.2.2", "3", "3.0", "3.3");
public void testBug() {
List<Reference> result = new ArrayList<Reference>(unsorted);
Collections.sort(result, new AlphaNumericComparator());
Assert.assertEquals(expected, result);
}