* </ul>
 *
 * <p>This annotation is a temporary hack. We will remove it after <a
 * href="https://github.com/google/guava/issues/6126#issuecomment-1203145963">tools no longer need
 * it</a>.
 */
@GwtCompatible
@Retention(CLASS)
@Target({FIELD, METHOD, PARAMETER})

 * </ul>
 *
 * <p>This annotation is a temporary hack. We will remove it after <a
 * href="https://github.com/google/guava/issues/6126#issuecomment-1203145963">tools no longer need
 * it</a>.
 */
@GwtCompatible
@Retention(CLASS)
@Target({FIELD, METHOD, PARAMETER})

 * </ul>
 *
 * <p>This annotation is a temporary hack. We will remove it after <a
 * href="https://github.com/google/guava/issues/6126#issuecomment-1203145963">tools no longer need
 * it</a>.
 */
@GwtCompatible
@Retention(CLASS)
@Target({FIELD, METHOD, PARAMETER})

    // ordering.reverse() might be optimized, so let it do its thing
    return ordering.<T>reverse().<@NonNull S>nullsLast();
  }

  @SuppressWarnings("unchecked") // still need the right way to explain this
  @Override
  public <S extends @Nullable T> Ordering<@Nullable S> nullsFirst() {
    return (Ordering<@Nullable S>) this;
  }

  @Override

      implements Supplier<T>, Serializable {
    private transient Object lock = new Object();

    final Supplier<T> delegate;
    transient volatile boolean initialized;
    // "value" does not need to be volatile; visibility piggy-backs
    // on volatile read of "initialized".
    transient @Nullable T value;

    MemoizingSupplier(Supplier<T> delegate) {
      this.delegate = checkNotNull(delegate);
    }

  }

  interface HashFn {
    byte[] hash(byte[] input, int seed);
  }

  static void verifyHashFunction(HashFn hashFunction, int hashbits, int expected) {
    int hashBytes = hashbits / 8;

    byte[] key = new byte[256];
    byte[] hashes = new byte[hashBytes * 256];

    // Hash keys of the form {}, {0}, {0,1}, {0,1,2}... up to N=255,using 256-N as the seed
    for (int i = 0; i < 256; i++) {
      key[i] = (byte) i;

    int h1 = Objects.hashCode(1, "two", 3.0);
    int h2 = Objects.hashCode(Integer.valueOf(1), new String("two"), Double.valueOf(3.0));
    // repeatable
    assertEquals(h1, h2);

    // These don't strictly need to be true, but they're nice properties.
    assertTrue(Objects.hashCode(1, 2, null) != Objects.hashCode(1, 2));
    assertTrue(Objects.hashCode(1, 2, null) != Objects.hashCode(1, null, 2));

 * </ul>
 *
 * <p>This annotation is a temporary hack. We will remove it after <a
 * href="https://github.com/google/guava/issues/6126#issuecomment-1203145963">tools no longer need
 * it</a>.
 */
@GwtCompatible
@Retention(CLASS)
@Target({FIELD, METHOD, PARAMETER})

 * </ul>
 *
 * <p>This annotation is a temporary hack. We will remove it after <a
 * href="https://github.com/google/guava/issues/6126#issuecomment-1203145963">tools no longer need
 * it</a>.
 */
@GwtCompatible
@Retention(CLASS)
@Target({FIELD, METHOD, PARAMETER})

 * </ul>
 *
 * <p>This annotation is a temporary hack. We will remove it after <a
 * href="https://github.com/google/guava/issues/6126#issuecomment-1203145963">tools no longer need
 * it</a>.
 */
@GwtCompatible
@Retention(CLASS)
@Target({FIELD, METHOD, PARAMETER})