this.entriesByLowerBound = entriesByLowerBound;
  }

  private static final class RangeMapEntry<K extends Comparable, V>
      extends AbstractMapEntry<Range<K>, V> {
    private final Range<K> range;
    private final V value;

    RangeMapEntry(Cut<K> lowerBound, Cut<K> upperBound, V value) {
      this(Range.create(lowerBound, upperBound), value);
    }

    ImmutableListMultimap.Builder<String, Integer> builder = new Builder<>();
    final StringHolder holder = new StringHolder();
    holder.string = "one";
    Entry<String, Integer> entry =
        new AbstractMapEntry<String, Integer>() {
          @Override
          public String getKey() {
            return holder.string;
          }

          @Override
          public Integer getValue() {

    ImmutableSetMultimap.Builder<String, Integer> builder = new Builder<>();
    final StringHolder holder = new StringHolder();
    holder.string = "one";
    Entry<String, Integer> entry =
        new AbstractMapEntry<String, Integer>() {
          @Override
          public String getKey() {
            return holder.string;
          }

          @Override
          public Integer getValue() {

   * the values for a specific key, is used to implement {@link
   * ValueForKeyIterator} in constant time.
   */

  static final class Node<K extends @Nullable Object, V extends @Nullable Object>
      extends AbstractMapEntry<K, V> {
    @ParametricNullness final K key;
    @ParametricNullness V value;
    @CheckForNull Node<K, V> next; // the next node (with any key)
    @CheckForNull Node<K, V> previous; // the previous node (with any key)

    ImmutableListMultimap.Builder<String, Integer> builder = new Builder<>();
    final StringHolder holder = new StringHolder();
    holder.string = "one";
    Entry<String, Integer> entry =
        new AbstractMapEntry<String, Integer>() {
          @Override
          public String getKey() {
            return holder.string;
          }

          @Override
          public Integer getValue() {

    this.entriesByLowerBound = entriesByLowerBound;
  }

  private static final class RangeMapEntry<K extends Comparable, V>
      extends AbstractMapEntry<Range<K>, V> {
    private final Range<K> range;
    private final V value;

    RangeMapEntry(Cut<K> lowerBound, Cut<K> upperBound, V value) {
      this(Range.create(lowerBound, upperBound), value);
    }

    }

    @Override
    public boolean isEmpty() {
      return keyIndex.isEmpty();
    }

    Entry<K, V> getEntry(final int index) {
      checkElementIndex(index, size());
      return new AbstractMapEntry<K, V>() {
        @Override
        public K getKey() {
          return ArrayMap.this.getKey(index);
        }

        @Override
        @ParametricNullness
        public V getValue() {

        }

        @Override
        public Entry<K, ImmutableSet<V>> next() {
          final Entry<K, V> backingEntry = backingIterator.next();
          return new AbstractMapEntry<K, ImmutableSet<V>>() {
            @Override
            public K getKey() {
              return backingEntry.getKey();
            }

            @Override

        }

        @Override
        public Entry<K, ImmutableSet<V>> next() {
          final Entry<K, V> backingEntry = backingIterator.next();
          return new AbstractMapEntry<K, ImmutableSet<V>>() {
            @Override
            public K getKey() {
              return backingEntry.getKey();
            }

            @Override

   */
  static <K extends @Nullable Object, V extends @Nullable Object> Entry<K, V> unmodifiableEntry(
      final Entry<? extends K, ? extends V> entry) {
    checkNotNull(entry);
    return new AbstractMapEntry<K, V>() {
      @Override
      @ParametricNullness
      public K getKey() {
        return entry.getKey();
      }

      @Override
      @ParametricNullness