Comparator<? super K> comparator) {
    return fromEntries(checkNotNull(comparator), false, entries);
  }

  /**
   * Returns an immutable map containing the same entries as the provided sorted map, with the same
   * ordering.
   *
   * <p>Despite the method name, this method attempts to avoid actually copying the data when it is

    testConcurrentLoading(CacheBuilder.newBuilder().expireAfterWrite(10, TimeUnit.SECONDS));
  }

  /**
   * On a successful concurrent computation, only one thread does the work, but all the threads get
   * the same result.
   */
  private static void testConcurrentLoadingDefault(CacheBuilder<Object, Object> builder)
      throws InterruptedException {

    int count = 10;

      fail("Expected IAE");
    } catch (IllegalArgumentException expected) {
    }
  }

  public void testCartesianProduct_hashCode() {
    // Run through the same cartesian products we tested above

    Set<List<Integer>> degenerate = Sets.cartesianProduct();
    checkHashCode(degenerate);

    checkHashCode(Sets.cartesianProduct(set(1, 2)));

    // A few elements.
    a = asList(4, 8, 15, 16, 23, 42);
    b = asList(4, 8, 15, 16, 23, 42);
    assertTrue(Iterators.elementsEqual(a.iterator(), b.iterator()));

    // The same, but with nulls.
    a = Arrays.<@Nullable Integer>asList(4, 8, null, 16, 23, 42);
    b = Arrays.<@Nullable Integer>asList(4, 8, null, 16, 23, 42);
    assertTrue(Iterators.elementsEqual(a.iterator(), b.iterator()));

 * java.util.Objects#requireNonNull(Object)}. Instead, use whichever of {@link
 * #checkNotNull(Object)} or {@link Verify#verifyNotNull(Object)} is appropriate to the situation.
 * (The same goes for the message-accepting overloads.)
 *
 * <h3>Only {@code %s} is supported</h3>
 *
 * <p>{@code Preconditions} uses {@link Strings#lenientFormat} to format error message template

      Comparator<? super K> comparator) {
    return fromEntries(checkNotNull(comparator), false, entries);
  }

  /**
   * Returns an immutable map containing the same entries as the provided sorted map, with the same
   * ordering.
   *
   * <p>Despite the method name, this method attempts to avoid actually copying the data when it is

    MapDifference<Integer, String> same = Maps.difference(left, right);
    MapDifference<Integer, String> reverse = Maps.difference(right, left);
    MapDifference<Integer, String> diff2 = Maps.difference(left, right2);

    new EqualsTester()
        .addEqualityGroup(original, same)
        .addEqualityGroup(reverse)
        .addEqualityGroup(diff2)
        .testEquals();

    MapDifference<Integer, String> same = Maps.difference(left, right);
    MapDifference<Integer, String> reverse = Maps.difference(right, left);
    MapDifference<Integer, String> diff2 = Maps.difference(left, right2);

    new EqualsTester()
        .addEqualityGroup(original, same)
        .addEqualityGroup(reverse)
        .addEqualityGroup(diff2)
        .testEquals();

    testConcurrentLoading(CacheBuilder.newBuilder().expireAfterWrite(10, TimeUnit.SECONDS));
  }

  /**
   * On a successful concurrent computation, only one thread does the work, but all the threads get
   * the same result.
   */
  private static void testConcurrentLoadingDefault(CacheBuilder<Object, Object> builder)
      throws InterruptedException {

    int count = 10;

   *
   * <p>The iteration order of the returned set follows the enum's iteration order, not the order in
   * which the elements appear in the given collection.
   *
   * @param elements the elements, all of the same {@code enum} type, that the set should contain
   * @return an immutable set containing those elements, minus duplicates
   */
  // http://code.google.com/p/google-web-toolkit/issues/detail?id=3028