map.replaceValues("bar", asList(1, 2));
    assertEquals("[bar=1, foo=2, bar=2]", map.entries().toString());
    assertEquals("{bar=[1, 2], foo=[2]}", map.toString());
  }

  public void testLinkedClear() {
    ListMultimap<String, Integer> map = create();
    map.put("foo", 1);
    map.put("foo", 2);
    map.put("bar", 3);
    List<Integer> foos = map.get("foo");
    Collection<Integer> values = map.values();