*/
  @J2ktIncompatible
  default ListenableScheduledFuture<?> scheduleAtFixedRate(
      Runnable command, Duration initialDelay, Duration period) {
    return scheduleAtFixedRate(
        command, toNanosSaturated(initialDelay), toNanosSaturated(period), TimeUnit.NANOSECONDS);
  }

  /**
   * @since 15.0 (previously returned ScheduledFuture)
   */
  @Override
  ListenableScheduledFuture<?> scheduleWithFixedDelay(

    return invokeAny(tasks, toNanosSaturated(timeout), TimeUnit.NANOSECONDS);
  }

  /**
   * Duration-based overload of {@link #awaitTermination(long, TimeUnit)}.
   *
   * @since 32.1.0
   */
  @J2ktIncompatible
  default boolean awaitTermination(Duration timeout) throws InterruptedException {
    return awaitTermination(toNanosSaturated(timeout), TimeUnit.NANOSECONDS);
  }

   */
  // We use this method only for cases in which we need to decompose to primitives.
  @SuppressWarnings({"GoodTime-ApiWithNumericTimeUnit", "GoodTime-DecomposeToPrimitive"})
  @IgnoreJRERequirement
  static long toNanosSaturated(Duration duration) {
    // Using a try/catch seems lazy, but the catch block will rarely get invoked (except for
    // durations longer than approximately +/- 292 years).
    try {
      return duration.toNanos();

   * {@link Long#MAX_VALUE} or {@link Long#MIN_VALUE}. This behavior can be useful when decomposing
   * a duration in order to call a legacy API which requires a {@code long, TimeUnit} pair.
   */
  static long toNanosSaturated(Duration duration) {
    // Using a try/catch seems lazy, but the catch block will rarely get invoked (except for
    // durations longer than approximately +/- 292 years).
    try {
      return duration.toNanos();

   */
  // We use this method only for cases in which we need to decompose to primitives.
  @SuppressWarnings({"GoodTime-ApiWithNumericTimeUnit", "GoodTime-DecomposeToPrimitive"})
  @IgnoreJRERequirement
  static long toNanosSaturated(Duration duration) {
    // Using a try/catch seems lazy, but the catch block will rarely get invoked (except for
    // durations longer than approximately +/- 292 years).
    try {
      return duration.toNanos();