assertEquals(map.size(), oldSize - 1);
    assertFalse(map.containsKey(key));
    assertEquals(subMap.size(), oldSize - 2);
  }

  public void testTailMapClearThrough() {
    SortedMap<K, V> map;
    try {
      map = makePopulatedMap();
    } catch (UnsupportedOperationException e) {
      return;
    }
    int oldSize = map.size();
    if (map.size() < 2 || !supportsClear) {

  }

  @CollectionSize.Require(absent = ZERO)
  @MapFeature.Require({SUPPORTS_REMOVE, SUPPORTS_PUT})
  public void testPropagatesRemoveThenAddToMultimap() {
    int oldSize = getNumElements();

    Collection<V> result = multimap().asMap().get(k0());
    assertTrue(result.remove(v0()));

    assertFalse(multimap().containsKey(k0()));

  }

  @CollectionSize.Require(absent = ZERO)
  @MapFeature.Require({SUPPORTS_REMOVE, SUPPORTS_PUT})
  public void testPropagatesRemoveThenAddToMultimap() {
    int oldSize = getNumElements();

    Collection<V> result = multimap().asMap().get(k0());
    assertTrue(result.remove(v0()));

    assertFalse(multimap().containsKey(k0()));

  }

  @CollectionSize.Require(absent = ZERO)
  @MapFeature.Require({SUPPORTS_REMOVE, SUPPORTS_PUT})
  public void testPropagatesRemoveLastThenAddToMultimap() {
    int oldSize = getNumElements();

    Collection<V> result = multimap().get(k0());
    assertTrue(result.remove(v0()));

    assertFalse(multimap().containsKey(k0()));
    assertFalse(multimap().containsEntry(k0(), v0()));