assertThat(Sets.<Object>cartesianProduct(x, y))
        .containsExactly(exp1, exp2, exp3, exp4)
        .inOrder();
  }

  public void testCartesianProductTooBig() {
    Set<Integer> set = ContiguousSet.create(Range.closed(0, 10000), DiscreteDomain.integers());
    assertThrows(IllegalArgumentException.class, () -> cartesianProduct(set, set, set, set, set));
  }

  public void testCartesianProduct_hashCode() {

        return ImmutableSortedSet.copyOf(contents);
      }
    },
    ContiguousSetImpl {
      @Override
      public <E extends Comparable<E>> Set<E> create(Collection<E> contents) {
        return ContiguousSet.copyOf(contents);
      }
    },
    ;
  }

  public enum ListMultimapImpl {
    ArrayListMultimapImpl {
      @Override
      <K, V> ListMultimap<K, V> create(Multimap<K, V> contents) {

        ? emptySet(delegate.comparator())
        : new RegularImmutableSortedSet<E>(delegate, isSubset);
  }

  private final transient SortedSet<E> sortedDelegate;

  /**
   * Scary constructor for ContiguousSet. This constructor (in this file, the GWT emulation of
   * ImmutableSortedSet) creates an empty sortedDelegate, which, in a vacuum, sets this object's