public final void isNotIn(Range<T> range) {
    if (range.contains(checkNotNull(actual))) {
      failWithActual("expected not to be in range", range);
    }
  }
@Test
  public void isNotInRange() {
    Range<Integer> oneToFive = Range.closed(1, 5);
    assertThat(6).isNotIn(oneToFive);

    expectFailureWhenTestingThat(4).isNotIn(oneToFive);
    assertThat(expectFailure.getFailure())
        .factValue("expected not to be in range")
        .isEqualTo(oneToFive.toString());
  }