@Override
  Set<Integer> createUnfiltered(Iterable<Integer> contents) {
    return newHashSet(contents);
  }

  @Override
  Set<Integer> filter(Set<Integer> elements, Predicate<? super Integer> predicate) {
    return Sets.filter(elements, predicate);
  }

    return Lists.newArrayList(contents);
  }

  @Override
  Collection<Integer> filter(Collection<Integer> elements, Predicate<? super Integer> predicate) {
    return Collections2.filter(elements, predicate);
  }

  }

  private static final class FilteredMultiset<E extends @Nullable Object> extends ViewMultiset<E> {
    final Multiset<E> unfiltered;
    final Predicate<? super E> predicate;

    FilteredMultiset(Multiset<E> unfiltered, Predicate<? super E> predicate) {
      this.unfiltered = checkNotNull(unfiltered);
      this.predicate = checkNotNull(predicate);
    }

    @Override

  }

  private static final class FilteredMultiset<E extends @Nullable Object> extends ViewMultiset<E> {
    final Multiset<E> unfiltered;
    final Predicate<? super E> predicate;

    FilteredMultiset(Multiset<E> unfiltered, Predicate<? super E> predicate) {
      this.unfiltered = checkNotNull(unfiltered);
      this.predicate = checkNotNull(predicate);
    }

    @Override

    extends FilteredEntryMultimap<K, V> implements FilteredSetMultimap<K, V> {

  FilteredEntrySetMultimap(SetMultimap<K, V> unfiltered, Predicate<? super Entry<K, V>> predicate) {
    super(unfiltered, predicate);
  }

  @Override
  public SetMultimap<K, V> unfiltered() {
    return (SetMultimap<K, V>) unfiltered;
  }

  @Override
  public Set<V> get(@ParametricNullness K key) {
    return (Set<V>) super.get(key);

   * {@code predicate}.
   *
   * @since 2.0
   */
  public static <T extends @Nullable Object> int indexOf(
      Iterator<T> iterator, Predicate<? super T> predicate) {
    checkNotNull(predicate, "predicate");
    for (int i = 0; iterator.hasNext(); i++) {
      T current = iterator.next();
      if (predicate.apply(current)) {
        return i;
      }
    }

   * {@code predicate}.
   *
   * @since 2.0
   */
  public static <T extends @Nullable Object> int indexOf(
      Iterator<T> iterator, Predicate<? super T> predicate) {
    checkNotNull(predicate, "predicate");
    for (int i = 0; iterator.hasNext(); i++) {
      T current = iterator.next();
      if (predicate.apply(current)) {
        return i;
      }
    }

                    multimap.put("bar", 32);
                    multimap.put("foo", 16);
                    return filterKeys(multimap, not(Predicates.in(ImmutableSet.of("foo", "bar"))));
                  }
                })
            .named("Multimaps.filterKeys[SetMultimap, Predicate]")
            .withFeatures(
                CollectionSize.ANY,
                MultimapFeature.VALUE_COLLECTIONS_SUPPORT_ITERATOR_REMOVE,

    return Lists.newArrayList(contents);
  }

  @Override
  Collection<Integer> filter(Collection<Integer> elements, Predicate<? super Integer> predicate) {
    return Collections2.filter(elements, predicate);
  }

   *
   * <p><b>{@code Stream} equivalent:</b> {@link Stream#anyMatch} (same).
   */
  public final boolean anyMatch(Predicate<? super E> predicate) {
    return Iterables.any(getDelegate(), predicate);
  }

  /**
   * Returns {@code true} if every element in this fluent iterable satisfies the predicate. If this