* return {@code SortedSet}.
 *
 * @author Louis Wasserman
 */
@GwtIncompatible
@ElementTypesAreNonnullByDefault
interface SortedMultisetBridge<E extends @Nullable Object> extends Multiset<E> {
  @Override
  SortedSet<E> elementSet();

 *
 * @author Louis Wasserman
 * @since 11.0
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public interface SortedMultiset<E extends @Nullable Object>
    extends SortedMultisetBridge<E>, SortedIterable<E> {
  /**
   * Returns the comparator that orders this multiset, or {@link Ordering#natural()} if the natural
   * ordering of the elements is used.
   */
  @Override