public void test_plus_adjuster_Duration() {

    Duration duration = Duration.ofSeconds(4L * 60 * 60 + 5L * 60 + 6L);
    ZonedDateTime t = ZonedDateTime.of(LocalDateTime.of(2008, 6, 1, 12, 30, 59, 500), ZONE_0100);
    ZonedDateTime expected = ZonedDateTime.of(LocalDateTime.of(2008, 6, 1, 16, 36, 5, 500), ZONE_0100);
    assertEquals(t.plus(duration), expected);
  }

  @Test(groups = { "tck" }