* An {@code Iterable} whose elements are sorted relative to a {@code Comparator}, typically
 * provided at creation time.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
interface SortedIterable<T extends @Nullable Object> extends Iterable<T> {
  /**
   * Returns the {@code Comparator} by which the elements of this iterable are ordered, or {@code

 * An {@code Iterable} whose elements are sorted relative to a {@code Comparator}, typically
 * provided at creation time.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
interface SortedIterable<T extends @Nullable Object> extends Iterable<T> {
  /**
   * Returns the {@code Comparator} by which the elements of this iterable are ordered, or {@code

    checkNotNull(elements);
    Comparator<?> comparator2;
    if (elements instanceof SortedSet) {
      comparator2 = comparator((SortedSet<?>) elements);
    } else if (elements instanceof SortedIterable) {
      comparator2 = ((SortedIterable<?>) elements).comparator();
    } else {
      return false;
    }
    return comparator.equals(comparator2);
  }

  @SuppressWarnings("unchecked")

 * @author Louis Wasserman
 */
@GwtCompatible(emulated = true)
@SuppressWarnings("serial")
@ElementTypesAreNonnullByDefault
final class ImmutableSortedAsList<E> extends RegularImmutableAsList<E>
    implements SortedIterable<E> {
  ImmutableSortedAsList(ImmutableSortedSet<E> backingSet, ImmutableList<E> backingList) {
    super(backingSet, backingList);
  }

  @Override
  ImmutableSortedSet<E> delegateCollection() {