* is not guaranteed to traverse the elements of the MonitorBasedPriorityBlockingQueue in
 * any particular order. If you need ordered traversal, consider using {@code
 * Arrays.sort(pq.toArray())}. Also, method {@code drainTo} can be used to remove some or
 * all elements in priority order and place them in another collection.
 *
 * <p>Operations on this class make no guarantees about the ordering of elements with equal

    return testers;
  }

  @Override
  public TestSuite createTestSuite() {
    if (!getFeatures().contains(CollectionFeature.KNOWN_ORDER)) {
      List<Feature<?>> features = Helpers.copyToList(getFeatures());
      features.add(CollectionFeature.KNOWN_ORDER);
      withFeatures(features);
    }
    return super.createTestSuite();
  }

  @Override
  protected List<TestSuite> createDerivedSuites(

    @Override
    public Entry<K, V>[] createArray(int length) {
      return (Entry<K, V>[]) new Entry<?, ?>[length];
    }

    @Override
    public Iterable<Entry<K, V>> order(List<Entry<K, V>> insertionOrder) {
      return multimapGenerator.order(insertionOrder);
    }
  }

  static class ValuesGenerator<K, V, M extends Multimap<K, V>>
      implements TestCollectionGenerator<V> {

    }
  }

  /** If this collection is backed by an array of its elements in insertion order, returns it. */
  Object @Nullable [] internalArray() {
    return null;
  }

  /**
   * If this collection is backed by an array of its elements in insertion order, returns the offset
   * where this collection's elements start.
   */
  int internalArrayStart() {

 *       how the collection was created. Typically this is insertion order unless an explicit
 *       ordering is otherwise specified (e.g. {@link ImmutableSortedSet#naturalOrder}). See the
 *       appropriate factory method for details. View collections such as {@link
 *       ImmutableMultiset#elementSet} iterate in the same order as the parent, except as noted.

   * for a given key in sorted order, but it need not expose the <i>keys</i> in sorted order.
   * Individual {@code SortedSetMultimap} implementations, like those built with {@link
   * MultimapBuilder#treeKeys()}, may make additional guarantees.
   */
  @Override
  Map<K, Collection<V>> asMap();

  /**
   * Returns the comparator that orders the multimap values, with {@code null} indicating that

  @CollectionFeature.Require(absent = KNOWN_ORDER)
  public void testForEachUnknownOrder() {
    List<E> elements = new ArrayList<>();
    collection.forEach(elements::add);
    Helpers.assertEqualIgnoringOrder(Arrays.asList(createSamplesArray()), elements);
  }

  @CollectionFeature.Require(KNOWN_ORDER)
  public void testForEachKnownOrder() {
    List<E> elements = new ArrayList<>();

    Object[] actual = getList().toArray();
    assertArrayEquals("toArray() order should match list", createOrderedArray(), actual);
  }

  @CollectionSize.Require(absent = ZERO)
  public void testToArray_tooSmall() {
    Object[] actual = getList().toArray(new Object[0]);
    assertArrayEquals("toArray(tooSmall) order should match list", createOrderedArray(), actual);
  }

  public void testToArray_largeEnough() {

            "contents were not equal and in the same order: "
                + "expected = "
                + expected
                + ", actual = "
                + actual);
      }
    }

    if (expectedIter.hasNext() || actualIter.hasNext()) {
      // actual either had too few or too many elements
      Assert.fail(
          "contents were not equal and in the same order: "
              + "expected = "

                    }
                    return multimap;
                  }

                  @Override
                  public Iterable<Entry<String, String>> order(
                      List<Entry<String, String>> insertionOrder) {
                    return new Ordering<Entry<String, String>>() {
                      @Override