@Override
  public final ImmutableSet<Entry<K, V>> entrySet() {
    if (cachedEntrySet != null) {
      return cachedEntrySet;
    }
    return cachedEntrySet = createEntrySet();
  }

  abstract ImmutableSet<Entry<K, V>> createEntrySet();

  private transient @Nullable ImmutableSet<K> cachedKeySet = null;

  @Override
  public ImmutableSet<K> keySet() {
    if (cachedKeySet != null) {

      }
    }
  }

  @Override
  public @Nullable V get(@Nullable Object key) {
    return RegularImmutableMap.get(key, keyTable, mask);
  }

  @Override
  ImmutableSet<Entry<K, V>> createEntrySet() {
    return isEmpty()
        ? ImmutableSet.<Entry<K, V>>of()
        : new ImmutableMapEntrySet.RegularEntrySet<K, V>(this, entries);
  }

  @Override
  ImmutableSet<K> createKeySet() {

          changed = true;
          if (map.isEmpty()) {
            iterator.remove();
          }
        }
      }
      return changed;
    }

    @Override
    Set<Entry<R, V>> createEntrySet() {
      return new EntrySet();
    }

    @WeakOuter
    private final class EntrySet extends ImprovedAbstractSet<Entry<R, V>> {
      @Override
      public Iterator<Entry<R, V>> iterator() {

  @Override
  public ImmutableSet<Entry<E>> entrySet() {
    ImmutableSet<Entry<E>> es = entrySet;
    return (es == null) ? (entrySet = createEntrySet()) : es;
  }

  private ImmutableSet<Entry<E>> createEntrySet() {
    return isEmpty() ? ImmutableSet.<Entry<E>>of() : new EntrySet();
  }

  abstract Entry<E> getEntry(int index);

  @WeakOuter

        public boolean remove(@Nullable Object o) {
          return AsMap.this.remove(o) != null;
        }
      }
      return new KeySetImpl();
    }

    @Override
    Set<Entry<K, Collection<V>>> createEntrySet() {
      @WeakOuter
      final class EntrySetImpl extends Maps.EntrySet<K, Collection<V>> {
        @Override
        Map<K, Collection<V>> map() {
          return AsMap.this;
        }

  @LazyInit private transient @Nullable Set<Entry<K, V>> entrySetView;

  @Override
  public Set<Entry<K, V>> entrySet() {
    return (entrySetView == null) ? entrySetView = createEntrySet() : entrySetView;
  }

  Set<Entry<K, V>> createEntrySet() {
    return new EntrySetView();
  }

  @WeakOuter
  class EntrySetView extends Maps.EntrySet<K, V> {
    @Override
    Map<K, V> map() {

        public boolean remove(@Nullable Object o) {
          return AsMap.this.remove(o) != null;
        }
      }
      return new KeySetImpl();
    }

    @Override
    Set<Entry<K, Collection<V>>> createEntrySet() {
      @WeakOuter
      final class EntrySetImpl extends Maps.EntrySet<K, Collection<V>> {
        @Override
        Map<K, Collection<V>> map() {
          return AsMap.this;
        }

  }

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

  @Override
  boolean isPartialView() {
    return false;
  }

  @Override
  ImmutableSet<Entry<K, V>> createEntrySet() {
    return new ImmutableMapEntrySet.RegularEntrySet<>(this, entries);
  }

  @Override
  ImmutableSet<K> createKeySet() {
    return new KeySet<>(this);
  }

   */
  @Override
  public ImmutableSet<Entry<K, V>> entrySet() {
    ImmutableSet<Entry<K, V>> result = entrySet;
    return (result == null) ? entrySet = createEntrySet() : result;
  }

  abstract ImmutableSet<Entry<K, V>> createEntrySet();

  @LazyInit @RetainedWith private transient @Nullable ImmutableSet<K> keySet;

  /**

   */
  @Override
  public ImmutableSet<Entry<K, V>> entrySet() {
    ImmutableSet<Entry<K, V>> result = entrySet;
    return (result == null) ? entrySet = createEntrySet() : result;
  }

  abstract ImmutableSet<Entry<K, V>> createEntrySet();

  @LazyInit @RetainedWith private transient @Nullable ImmutableSet<K> keySet;

  /**