} catch (UnsupportedOperationException e) {
      return;
    }
    for (V value : valueCollection) {
      assertFalse(unmappedValue.equals(value));
    }
  }

  public void testValuesIteratorRemove() {
    Map<K, V> map;
    try {
      map = makePopulatedMap();
    } catch (UnsupportedOperationException e) {
      return;
    }

    Collection<V> valueCollection = map.values();