}
  }

  public static void assertEmpty(Map<?, ?> map) {
    if (!map.isEmpty()) {
      fail("Not true that " + map + " is empty");
    }
  }

  public static void assertEqualInOrder(Iterable<?> expected, Iterable<?> actual) {
    Iterator<?> expectedIter = expected.iterator();
    Iterator<?> actualIter = actual.iterator();

    while (expectedIter.hasNext() && actualIter.hasNext()) {