}

  private Entry<K, V>[] getEntriesMultipleNullKeys() {
    Entry<K, V>[] entries = createArrayWithNullKey();
    entries[0] = entry(null, entries[0].getValue());
    return entries;
  }

  private Entry<K, V>[] getEntriesMultipleNonNullKeys() {
    Entry<K, V>[] entries = createSamplesArray();
    entries[0] = entry(k1(), v0());
    return entries;
  }

  }

  private static <K, V> Map<K, V> newHashMap(
      Collection<? extends Entry<? extends K, ? extends V>> entries) {
    HashMap<K, V> map = new HashMap<>();
    for (Entry<? extends K, ? extends V> entry : entries) {
      map.put(entry.getKey(), entry.getValue());
    }
    return map;
  }

  }

  /**
   * Wraps the {@code setValue} implementation of an {@code Entry} to enforce the class constraint.
   */
  private static <B extends @Nullable Object> Entry<Class<? extends @NonNull B>, B> checkedEntry(
      final Entry<Class<? extends @NonNull B>, B> entry) {
    return new ForwardingMapEntry<Class<? extends @NonNull B>, B>() {
      @Override
      protected Entry<Class<? extends @NonNull B>, B> delegate() {
        return entry;

  }

  @Override
  public int count(@CheckForNull Object element) {
    return forward.count(element);
  }

  @Override
  @CheckForNull
  public Entry<E> firstEntry() {
    return forward.lastEntry();
  }

  @Override
  @CheckForNull
  public Entry<E> lastEntry() {
    return forward.firstEntry();
  }

  @Override
  public int size() {
    return forward.size();
  }

  @Override

  private Entry<K, V> nullKeyEntry;
  private Entry<K, V> nullValueEntry;
  private Entry<K, V> nullKeyValueEntry;
  private Entry<K, V> presentKeyNullValueEntry;

  @Override
  public void setUp() throws Exception {
    super.setUp();
    nullKeyEntry = entry(null, v3());
    nullValueEntry = entry(k3(), null);
    nullKeyValueEntry = entry(null, null);

    BiMap<Integer, String> map = HashBiMap.create();
    map.put(1, "one");
    Set<Entry<Integer, String>> entries = map.entrySet();
    Iterator<Entry<Integer, String>> iterator = entries.iterator();
    Entry<Integer, String> entry = iterator.next();
    entry.setValue("two"); // changes the iterator's current entry value
    assertEquals("two", map.get(1));
    assertEquals(Integer.valueOf(1), map.inverse().get("two"));

    }
  }

  private static int getHash(long entry) {
    return (int) (entry >>> 32);
  }

  /** Returns the index, or UNSET if the pointer is "null" */
  private static int getNext(long entry) {
    return (int) entry;
  }

  /** Returns a new entry value by changing the "next" index of an existing entry */
  private static long swapNext(long entry, int newNext) {

          contents.add(entry.getElement());
        }
      }
      return ((Multiset<E>) gen.create(contents.toArray())).entrySet();
    }

    @SuppressWarnings("unchecked")
    @Override
    public Multiset.Entry<E>[] createArray(int length) {
      return (Multiset.Entry<E>[]) new Multiset.Entry<?>[length];
    }

    @Override

  public Entry<String, String> aboveSamplesGreater() {
    return mapEntry("~~ b", "above view");
  }

  @Override
  public Iterable<Entry<String, String>> order(List<Entry<String, String>> insertionOrder) {
    return orderEntriesByKey(insertionOrder);
  }

  @Override
  protected abstract SortedMap<String, String> create(Entry<String, String>[] entries);

  @Override
  public SortedMap<String, String> create(Object... entries) {

  public Entry<String, String> aboveSamplesGreater() {
    return mapEntry("~~ b", "above view");
  }

  @Override
  public Iterable<Entry<String, String>> order(List<Entry<String, String>> insertionOrder) {
    return orderEntriesByKey(insertionOrder);
  }

  @Override
  protected abstract SortedMap<String, String> create(Entry<String, String>[] entries);

  @Override
  public SortedMap<String, String> create(Object... entries) {