* elapsed time. Therefore, we recommend using {@link #elapsed()} instead, which returns a
   * strongly-typed {@link Duration} instance.
   *
   * @since 14.0 (since 10.0 as {@code elapsedTime()})
   */
  public long elapsed(TimeUnit desiredUnit) {
    return desiredUnit.convert(elapsedNanos(), NANOSECONDS);
  }

  /**