return this;
  }

  /**
   * Advances the ticker value by {@code duration}.
   *
   * @since 28.0
   */
  @GwtIncompatible
  @J2ktIncompatible
  @CanIgnoreReturnValue
  @SuppressWarnings("Java7ApiChecker") // guava-android can rely on library desugaring now.
  public FakeTicker advance(Duration duration) {
    return advance(duration.toNanos());
  }

  /**

   * uninterruptibly.
   *
   * @since NEXT (but since 28.0 in the JRE flavor)
   */
  @J2ktIncompatible
  @GwtIncompatible // concurrency
  @SuppressWarnings("Java7ApiChecker")
  @IgnoreJRERequirement // Users will use this only if they're already using Duration.
  public static boolean awaitUninterruptibly(CountDownLatch latch, Duration timeout) {

   *
   * @throws IOException if an I/O error occurs while writing to this sink
   * @since NEXT (but since 22.0 in the JRE flavor)
   */
  @SuppressWarnings("Java7ApiChecker")
  @IgnoreJRERequirement // Users will use this only if they're already using Stream.
  public void writeLines(Stream<? extends CharSequence> lines) throws IOException {
    writeLines(lines, LINE_SEPARATOR.value());
  }

  }

  /**
   * Returns an immutable array containing all the values from {@code stream}, in order.
   *
   * @since NEXT (but since 22.0 in the JRE flavor)
   */
  @SuppressWarnings("Java7ApiChecker")
  @IgnoreJRERequirement // Users will use this only if they're already using streams.
  public static ImmutableIntArray copyOf(IntStream stream) {

  }

  /**
   * Returns an immutable array containing all the values from {@code stream}, in order.
   *
   * @since NEXT (but since 22.0 in the JRE flavor)
   */
  @SuppressWarnings("Java7ApiChecker")
  @IgnoreJRERequirement // Users will use this only if they're already using streams.
  public static ImmutableLongArray copyOf(LongStream stream) {

   *     href="https://github.com/google/guava#guava-google-core-libraries-for-java">flavor</a>)
   */
  @GwtIncompatible
  @J2ktIncompatible
  @CanIgnoreReturnValue
  @SuppressWarnings("Java7ApiChecker") // guava-android can rely on library desugaring now.
  @IgnoreJRERequirement // TODO: b/288085449 - Remove this once we use library-desugaring scents.

  }

  /**
   * Returns an immutable array containing all the values from {@code stream}, in order.
   *
   * @since NEXT (but since 22.0 in the JRE flavor)
   */
  @SuppressWarnings("Java7ApiChecker")
  @IgnoreJRERequirement // Users will use this only if they're already using streams.
  public static ImmutableDoubleArray copyOf(DoubleStream stream) {

   * java.util.Optional}, or {@code null} if the argument is null.
   *
   * @since NEXT (but since 21.0 in the JRE flavor)
   */
  @SuppressWarnings("Java7ApiChecker")
  @IgnoreJRERequirement // Users will use this only if they're already using Optional.
  @CheckForNull
  public static <T> Optional<T> fromJavaUtil(@CheckForNull java.util.Optional<T> javaUtilOptional) {

   * @throws IllegalArgumentException if {@code permitsPerSecond} is negative or zero or {@code
   *     warmupPeriod} is negative
   * @since NEXT (but since 28.0 in the JRE flavor)
   */
  @SuppressWarnings("Java7ApiChecker")
  @IgnoreJRERequirement // Users will use this only if they're already using Duration.
  public static RateLimiter create(double permitsPerSecond, Duration warmupPeriod) {

   *
   * @param values a series of values
   * @since NEXT (but since 28.2 in the JRE flavor)
   */
  @SuppressWarnings("Java7ApiChecker")
  @IgnoreJRERequirement // Users will use this only if they're already using streams.
  public void addAll(DoubleStream values) {