@Override
  Iterator<Entry<K, V>> entryIterator() {
    return new Itr<Entry<K, V>>() {
      @Override
      Entry<K, V> output(@ParametricNullness K key, @ParametricNullness V value) {
        return Maps.immutableEntry(key, value);
      }
    };
  }

  @Override
  Map<K, Collection<V>> createAsMap() {
    return new AsMap(map);
  }

  final Map<K, Collection<V>> createMaybeNavigableAsMap() {

  @Override
  Iterator<Entry<K, V>> entryIterator() {
    return new Itr<Entry<K, V>>() {
      @Override
      Entry<K, V> output(@ParametricNullness K key, @ParametricNullness V value) {
        return Maps.immutableEntry(key, value);
      }
    };
  }

  @Override
  Spliterator<Entry<K, V>> entrySpliterator() {
    return CollectSpliterators.flatMap(
        map.entrySet().spliterator(),