assertTrue(Multisets.containsOccurrences(superMultiset, subMultiset));
    assertFalse(Multisets.containsOccurrences(subMultiset, superMultiset));
  }

  public void testContainsOccurrences() {
    Multiset<String> superMultiset = HashMultiset.create(asList("a", "b", "a"));
    Multiset<String> subMultiset = HashMultiset.create(asList("a", "b"));