List<Integer> result = addSupplier.get();
    assertEquals(Integer.valueOf(0), result.get(0));
    assertEquals(Integer.valueOf(1), result.get(1));
  }

  @J2ktIncompatible
  @GwtIncompatible // Thread.sleep
  @SuppressWarnings("DoNotCall")
  public void testMemoizeWithExpiration_longTimeUnit() throws InterruptedException {
    CountingSupplier countingSupplier = new CountingSupplier();

    List<Integer> result = addSupplier.get();
    assertEquals(Integer.valueOf(0), result.get(0));
    assertEquals(Integer.valueOf(1), result.get(1));
  }

  @J2ktIncompatible
  @GwtIncompatible // Thread.sleep
  @SuppressWarnings("DoNotCall")
  public void testMemoizeWithExpiration_longTimeUnit() throws InterruptedException {
    CountingSupplier countingSupplier = new CountingSupplier();