Iterable<String> toRemove = asList("a", "b", "a");
    assertFalse(Multisets.removeOccurrences(multiset, toRemove));
    assertTrue(multiset.isEmpty());
  }

  public void testRemoveOccurrencesMultisetEmpty() {
    Multiset<String> multiset = HashMultiset.create();
    Multiset<String> toRemove = HashMultiset.create(asList("a", "b", "a"));
    assertFalse(Multisets.removeOccurrences(multiset, toRemove));