@Override
  public ImmutableCollection<Entry<K, V>> entries() {
    return (ImmutableCollection<Entry<K, V>>) super.entries();
  }

  @Override
  ImmutableCollection<Entry<K, V>> createEntries() {
    return new EntryCollection<>(this);
  }

  private static final class EntryCollection<K, V> extends ImmutableCollection<Entry<K, V>> {
    @Weak final ImmutableMultimap<K, V> multimap;

        Collection<?> collection = (Collection<?>) elements;
        ensureRoomFor(collection.size());
        if (collection instanceof ImmutableCollection) {
          ImmutableCollection<?> immutableCollection = (ImmutableCollection<?>) collection;
          size = immutableCollection.copyIntoArray(contents, size);
          return this;
        }
      }
      super.addAll(elements);
      return this;
    }

/**
 * {@code values()} implementation for {@link ImmutableMap}.
 *
 * @author Jesse Wilson
 * @author Kevin Bourrillion
 */
@GwtCompatible
final class ImmutableMapValues<K, V> extends ImmutableCollection<V> {
  private final ImmutableMap<K, V> map;

  ImmutableMapValues(ImmutableMap<K, V> map) {
    this.map = map;
  }

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

  @Override

    assertNotInstantiable(new TypeToken<ImmutableMultiset<EmptyEnum>>() {});
  }

  public void testImmutableCollection() {
    assertFreshInstance(new TypeToken<ImmutableCollection<String>>() {});
    assertNotInstantiable(new TypeToken<ImmutableCollection<EmptyEnum>>() {});
  }

  public void testImmutableMap() {
    assertFreshInstance(new TypeToken<ImmutableMap<String, Integer>>() {});
  }

      }

      @Override
      public K next() {
        return entryIterator.next().getKey();
      }
    };
  }

  private transient @Nullable ImmutableCollection<V> cachedValues = null;

  @Override
  public ImmutableCollection<V> values() {
    if (cachedValues != null) {
      return cachedValues;
    }
    return cachedValues = createValues();
  }

        Entry::getKey);
  }

  @LazyInit @RetainedWith private transient @Nullable ImmutableCollection<V> values;

  /**
   * Returns an immutable collection of the values in this map, in the same order that they appear
   * in {@link #entrySet}.
   */
  @Override
  public ImmutableCollection<V> values() {
    ImmutableCollection<V> result = values;
    return (result == null) ? values = createValues() : result;
  }

    assertNotInstantiable(new TypeToken<ImmutableMultiset<EmptyEnum>>() {});
  }

  public void testImmutableCollection() {
    assertFreshInstance(new TypeToken<ImmutableCollection<String>>() {});
    assertNotInstantiable(new TypeToken<ImmutableCollection<EmptyEnum>>() {});
  }

  public void testImmutableMap() {
    assertFreshInstance(new TypeToken<ImmutableMap<String, Integer>>() {});
  }

      Collection<? extends Map.Entry<K, ImmutableCollection.Builder<V>>> mapEntries,
      @Nullable Comparator<? super V> valueComparator) {
    if (mapEntries.isEmpty()) {
      return of();
    }
    ImmutableMap.Builder<K, ImmutableSet<V>> builder =
        new ImmutableMap.Builder<>(mapEntries.size());
    int size = 0;

    for (Entry<K, ImmutableCollection.Builder<V>> entry : mapEntries) {

      Collection<? extends Map.Entry<K, ImmutableCollection.Builder<V>>> mapEntries,
      @Nullable Comparator<? super V> valueComparator) {
    if (mapEntries.isEmpty()) {
      return of();
    }
    ImmutableMap.Builder<K, ImmutableSet<V>> builder =
        new ImmutableMap.Builder<>(mapEntries.size());
    int size = 0;

    for (Entry<K, ImmutableCollection.Builder<V>> entry : mapEntries) {

  public static <T extends @Nullable Object> Iterable<T> unmodifiableIterable(
      Iterable<? extends T> iterable) {
    checkNotNull(iterable);
    if (iterable instanceof UnmodifiableIterable || iterable instanceof ImmutableCollection) {
      @SuppressWarnings("unchecked") // Since it's unmodifiable, the covariant cast is safe
      Iterable<T> result = (Iterable<T>) iterable;
      return result;
    }