@Override
        public void write(int b) throws IOException {
          bitBuffer <<= 8;
          bitBuffer |= b & 0xFF;
          bitBufferLength += 8;
          while (bitBufferLength >= alphabet.bitsPerChar) {
            int charIndex = (bitBuffer >> (bitBufferLength - alphabet.bitsPerChar)) & alphabet.mask;
            out.write(alphabet.encode(charIndex));
            writtenChars++;

   * instead.
   *
   * <p>Unfortunately, the method reference {@code Optional::toJavaUtil} will not work, because it
   * could refer to either the static or instance version of this method. Write out the lambda
   * expression {@code o -> Optional.toJavaUtil(o)} instead.
   *
   * @since 21.0
   */
  @CheckForNull
  public static <T> java.util.Optional<T> toJavaUtil(@CheckForNull Optional<T> googleOptional) {

    List<Integer> first = iterator.next();

    // Changes after are too (unlike Iterables.partition)
    list.set(2, 5);

    assertEquals(asList(3, 4, 5), first);

    // Changes to a sublist also write through to the original list
    first.set(1, 6);
    assertEquals(asList(3, 6, 5), list);
  }

  public void testPartitionSize_1() {
    List<Integer> list = asList(1, 2, 3);

              new Runnable() {
                @Override
                public void run() {
                  try {
                    // We'd like to log progress and failures that may arise in the
                    // following code, but unfortunately the behavior of logging
                    // is undefined in shutdown hooks.
                    // This is because the logging code installs a shutdown hook of its

    List<Integer> first = iterator.next();

    // Changes after are too (unlike Iterables.partition)
    list.set(2, 5);

    assertEquals(asList(3, 4, 5), first);

    // Changes to a sublist also write through to the original list
    first.set(1, 6);
    assertEquals(asList(3, 6, 5), list);
  }

  public void testPartitionSize_1() {
    List<Integer> list = asList(1, 2, 3);

   * Returns this {@code Optional} if it has a value present; {@code secondChoice} otherwise.
   *
   * <p><b>Comparison to {@code java.util.Optional}:</b> this method has no equivalent in Java 8's
   * {@code Optional} class; write {@code thisOptional.isPresent() ? thisOptional : secondChoice}
   * instead.
   */
  public abstract Optional<T> or(Optional<? extends T> secondChoice);

  /**