K extends @Nullable Object, V extends @Nullable Object>
      extends UnmodifiableMultimap<K, V> implements SetMultimap<K, V> {
    UnmodifiableSetMultimap(SetMultimap<K, V> delegate) {
      super(delegate);
    }

    @Override
    public SetMultimap<K, V> delegate() {
      return (SetMultimap<K, V>) super.delegate();
    }

    @Override
    public Set<V> get(@ParametricNullness K key) {
      /*

      extends SynchronizedMultimap<K, V> implements SetMultimap<K, V> {
    @CheckForNull transient Set<Map.Entry<K, V>> entrySet;

    SynchronizedSetMultimap(SetMultimap<K, V> delegate, @CheckForNull Object mutex) {
      super(delegate, mutex);
    }

    @Override
    SetMultimap<K, V> delegate() {
      return (SetMultimap<K, V>) super.delegate();
    }

    @Override

      extends SynchronizedMultimap<K, V> implements SetMultimap<K, V> {
    @CheckForNull transient Set<Map.Entry<K, V>> entrySet;

    SynchronizedSetMultimap(SetMultimap<K, V> delegate, @CheckForNull Object mutex) {
      super(delegate, mutex);
    }

    @Override
    SetMultimap<K, V> delegate() {
      return (SetMultimap<K, V>) super.delegate();
    }

    @Override