protected Set<TypeToken<? super T>> delegate() {
      ImmutableSet<TypeToken<? super T>> filteredTypes = types;
      if (filteredTypes == null) {
        // Java has no way to express ? super T when we parameterize TypeToken vs. Class.
        @SuppressWarnings({"unchecked", "rawtypes"})
        ImmutableList<TypeToken<? super T>> collectedTypes =
            (ImmutableList) TypeCollector.FOR_GENERIC_TYPE.collectTypes(TypeToken.this);

    return (ks != null) ? ks : (keySet = new KeySet());
  }

  @LazyInit @CheckForNull transient Collection<V> values;

  @Override
  public Collection<V> values() {
    Collection<V> vs = values;
    return (vs != null) ? vs : (values = new Values());
  }

  @LazyInit @CheckForNull transient Set<Entry<K, V>> entrySet;

  @Override
  public Set<Entry<K, V>> entrySet() {
    Set<Entry<K, V>> es = entrySet;