*
   * @throws NullPointerException if the last element is null; if this is a possibility, use {@link
   *     Iterables#getLast} instead.
   */
  @SuppressWarnings("nullness") // Unsafe, but we can't do much about it now.
  public final Optional<@NonNull E> last() {
    // Iterables#getLast was inlined here so we don't have to throw/catch a NSEE

    // TODO(kevinb): Support a concurrently modified collection?

   *
   * @throws NullPointerException if the last element is null; if this is a possibility, use {@link
   *     Iterables#getLast} instead.
   */
  @SuppressWarnings("nullness") // Unsafe, but we can't do much about it now.
  public final Optional<@NonNull E> last() {
    // Iterables#getLast was inlined here so we don't have to throw/catch a NSEE

    // TODO(kevinb): Support a concurrently modified collection?

    @Override
    public V getUnchecked(K key) {
      return autoDelegate.getUnchecked(key);
    }

    @Override
    public ImmutableMap<K, V> getAll(Iterable<? extends K> keys) throws ExecutionException {
      return autoDelegate.getAll(keys);
    }

    @Override
    public V apply(K key) {
      return autoDelegate.apply(key);
    }

    @Override

    @Override
    public V getUnchecked(K key) {
      return autoDelegate.getUnchecked(key);
    }

    @Override
    public ImmutableMap<K, V> getAll(Iterable<? extends K> keys) throws ExecutionException {
      return autoDelegate.getAll(keys);
    }

    @Override
    public V apply(K key) {
      return autoDelegate.apply(key);
    }

    @Override