assertEquals(
        "toArray(emptyT[]) should return an array of type T", empty.getClass(), array.getClass());
    assertEquals("toArray(emptyT[]).length:", getNumElements(), array.length);
    expectArrayContentsInOrder(getOrderedElements(), array);
  }

  public void testToArray_emptyArrayOfObject() {
    Object[] in = new Object[0];
    Object[] array = collection.toArray(in);
    assertEquals(

    assertEquals(
        "toArray(emptyT[]) should return an array of type T", empty.getClass(), array.getClass());
    assertEquals("toArray(emptyT[]).length:", getNumElements(), array.length);
    expectArrayContentsInOrder(getOrderedElements(), array);
  }

  public void testToArray_emptyArrayOfObject() {
    Object[] in = new Object[0];
    Object[] array = collection.toArray(in);
    assertEquals(

    runIteratorTest(MODIFIABLE, IteratorTester.KnownOrder.KNOWN_ORDER, getOrderedElements());
  }

  @CollectionFeature.Require(value = KNOWN_ORDER, absent = SUPPORTS_ITERATOR_REMOVE)
  public void testIterator_knownOrderRemoveUnsupported() {
    runIteratorTest(UNMODIFIABLE, IteratorTester.KnownOrder.KNOWN_ORDER, getOrderedElements());
  }

   */
  protected void expectContents(Collection<E> expected) {
    Helpers.assertEqualIgnoringOrder(expected, actualContents());
  }

  protected void expectUnchanged() {
    expectContents(getOrderedElements());
  }

  /**
   * Asserts that the collection under test contains exactly the elements it was initialized with
   * plus the given elements, according to {@link #expectContents(java.util.Collection)}. In other

    runIteratorTest(MODIFIABLE, IteratorTester.KnownOrder.KNOWN_ORDER, getOrderedElements());
  }

  @CollectionFeature.Require(value = KNOWN_ORDER, absent = SUPPORTS_ITERATOR_REMOVE)
  public void testIterator_knownOrderRemoveUnsupported() {
    runIteratorTest(UNMODIFIABLE, IteratorTester.KnownOrder.KNOWN_ORDER, getOrderedElements());
  }

  private void runListIteratorTest(Set<IteratorFeature> features) {
    new ListIteratorTester<E>(
        listListIteratorTesterNumIterations(),
        singleton(e4()),
        features,
        Helpers.copyToList(getOrderedElements()),
        0) {
      @Override
      protected ListIterator<E> newTargetIterator() {
        resetCollection();
        return getList().listIterator();
      }

      @Override

  }

  @CollectionFeature.Require(KNOWN_ORDER)
  public void testValuesInOrder() {
    List<V> expected = Lists.newArrayList();
    for (Entry<K, V> entry : getOrderedElements()) {
      expected.add(entry.getValue());
    }
    assertEqualInOrder(expected, multimap().values());
  }

  @CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE)
  @CollectionSize.Require(ONE)

  }

  @CollectionFeature.Require(KNOWN_ORDER)
  public void testValuesInOrder() {
    List<V> expected = Lists.newArrayList();
    for (Entry<K, V> entry : getOrderedElements()) {
      expected.add(entry.getValue());
    }
    assertEqualInOrder(expected, multimap().values());
  }

  @CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE)
  @CollectionSize.Require(ONE)

   */
  protected void expectContents(Collection<E> expected) {
    Helpers.assertEqualIgnoringOrder(expected, actualContents());
  }

  protected void expectUnchanged() {
    expectContents(getOrderedElements());
  }

  /**
   * Asserts that the collection under test contains exactly the elements it was initialized with
   * plus the given elements, according to {@link #expectContents(java.util.Collection)}. In other

  }

  @CollectionSize.Require(SEVERAL)
  @CollectionFeature.Require(value = KNOWN_ORDER, absent = NON_STANDARD_TOSTRING)
  public void testToString_sizeSeveral() {
    String expected = Helpers.copyToList(getOrderedElements()).toString();
    assertEquals("collection.toString() incorrect", expected, collection.toString());
  }

  @CollectionSize.Require(absent = ZERO)
  @CollectionFeature.Require(ALLOWS_NULL_VALUES)