super.setUp();
    timeLimiter = new FakeTimeLimiter();
  }

  public void testCallWithTimeout_propagatesReturnValue() throws Exception {
    String result =
        timeLimiter.callWithTimeout(Callables.returning(RETURN_VALUE), DELAY_MS, MILLISECONDS);

    assertThat(result).isEqualTo(RETURN_VALUE);
  }

  public void testCallWithTimeout_wrapsCheckedException() throws Exception {

    super.setUp();
    timeLimiter = new FakeTimeLimiter();
  }

  public void testCallWithTimeout_propagatesReturnValue() throws Exception {
    String result =
        timeLimiter.callWithTimeout(Callables.returning(RETURN_VALUE), DELAY_MS, MILLISECONDS);

    assertThat(result).isEqualTo(RETURN_VALUE);
  }

  public void testCallWithTimeout_wrapsCheckedException() throws Exception {

    checkNotNull(timeoutUnit);
    return target; // ha ha
  }

  @CanIgnoreReturnValue // TODO(kak): consider removing this
  @Override
  @ParametricNullness
  public <T extends @Nullable Object> T callWithTimeout(
      Callable<T> callable, long timeoutDuration, TimeUnit timeoutUnit) throws ExecutionException {
    checkNotNull(callable);
    checkNotNull(timeoutUnit);
    try {
      return callable.call();

    checkNotNull(timeoutUnit);
    return target; // ha ha
  }

  @CanIgnoreReturnValue // TODO(kak): consider removing this
  @Override
  @ParametricNullness
  public <T extends @Nullable Object> T callWithTimeout(
      Callable<T> callable, long timeoutDuration, TimeUnit timeoutUnit) throws ExecutionException {
    checkNotNull(callable);
    checkNotNull(timeoutUnit);
    try {
      return callable.call();

    assertThrows(
        TimeoutException.class,
        () -> service.callWithTimeout(GOOD_CALLABLE, NOT_ENOUGH_MS, MILLISECONDS));
  }

  public void testCallWithTimeout_badCallableWithEnoughTime() throws Exception {
    ExecutionException expected =
        assertThrows(
            ExecutionException.class,
            () -> service.callWithTimeout(BAD_CALLABLE, ENOUGH_MS, MILLISECONDS));

   * @since 28.0
   */
  @CanIgnoreReturnValue
  @ParametricNullness
  default <T extends @Nullable Object> T callWithTimeout(Callable<T> callable, Duration timeout)
      throws TimeoutException, InterruptedException, ExecutionException {
    return callWithTimeout(callable, toNanosSaturated(timeout), TimeUnit.NANOSECONDS);
  }

  /**