if (delegate != null) {
        return delegate.entrySet().contains(o);
      } else if (o instanceof Entry) {
        Entry<?, ?> entry = (Entry<?, ?>) o;
        int index = indexOf(entry.getKey());
        return index != -1 && Objects.equal(value(index), entry.getValue());
      }
      return false;
    }

    @Override
    public boolean remove(@CheckForNull Object o) {

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

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

  abstract Iterator<Entry<E>> entryIterator();

  @Nullable private transient Set<Entry<E>> entrySet;

  @Override
  public Set<Entry<E>> entrySet() {

  @CollectionSize.Require(absent = ZERO)
  public void testSetValue() {
    for (Entry<K, V> entry : getMap().entrySet()) {
      if (entry.getKey().equals(k0())) {
        assertEquals("entry.setValue() should return the old value", v0(), entry.setValue(v3()));
        break;
      }
    }
    expectReplacement(entry(k0(), v3()));
  }

  @MapFeature.Require({SUPPORTS_PUT, ALLOWS_NULL_VALUES})

      } else {
        // we need to update a pointer in an entry
        int entryIndex;
        int entry;
        do {
          entryIndex = next - 1;
          entry = entries[entryIndex];
          next = CompactHashing.getNext(entry, mask);
        } while (next != srcNext);
        // here, entries[entryIndex] points to the old entry location; update it

    @Override
    protected BiMap<String, String> create(Entry<String, String>[] entries) {
      ImmutableBiMap.Builder<String, String> builder = ImmutableBiMap.builder();
      for (Entry<String, String> entry : entries) {
        builder.put(entry.getKey(), entry.getValue());
      }
      return builder.build();
    }
  }

  public static class ImmutableEnumMapGenerator extends TestEnumMapGenerator {
    @Override
    protected Map<AnEnum, String> create(Entry<AnEnum, String>[] entries) {
      Map<AnEnum, String> map = Maps.newHashMap();
      for (Entry<AnEnum, String> entry : entries) {
        map.put(entry.getKey(), entry.getValue());
      }
      return Maps.immutableEnumMap(map);
    }
  }

  @J2ktIncompatible
  @GwtIncompatible // suite

    @SuppressWarnings("unchecked")
    Entry<String, String>[] array = (Entry<String, String>[]) new Entry<?, ?>[entries.length];
    int i = 0;
    for (Object o : entries) {
      @SuppressWarnings("unchecked")
      Entry<String, String> e = (Entry<String, String>) o;
      array[i++] = e;
    }
    return create(array);
  }

  protected abstract Map<String, String> create(Entry<String, String>[] entries);

  @Override

    @SuppressWarnings("unchecked")
    Entry<String, String>[] array = (Entry<String, String>[]) new Entry<?, ?>[entries.length];
    int i = 0;
    for (Object o : entries) {
      @SuppressWarnings("unchecked")
      Entry<String, String> e = (Entry<String, String>) o;
      array[i++] = e;
    }
    return create(array);
  }

  protected abstract Map<String, String> create(Entry<String, String>[] entries);

  @Override

  @Override
  public Set<Entry<K, V>> create(Object... elements) {
    Entry<K, V>[] entries = createArray(elements.length);
    System.arraycopy(elements, 0, entries, 0, elements.length);
    return createFromEntries(entries);
  }

  public abstract Set<Entry<K, V>> createFromEntries(Entry<K, V>[] entries);

  @Override
  @SuppressWarnings("unchecked") // generic arrays make typesafety sad
  public Entry<K, V>[] createArray(int length) {

          builder.add(mapEntry(entry.getKey(), v));
        }
        map.put(entry.getKey(), entry.getValue());
      }
      Iterable<Entry<K, V>> ordered = multimapGenerator.order(builder);
      LinkedHashMap<K, Collection<V>> orderedMap = new LinkedHashMap<>();
      for (Entry<K, V> entry : ordered) {
        orderedMap.put(entry.getKey(), map.get(entry.getKey()));
      }