public void constructor_nullOffset() throws Throwable {

    Constructor<OffsetTime> con = OffsetTime.class.getDeclaredConstructor(LocalTime.class, ZoneOffset.class);
    con.setAccessible(true);
    try {
      con.newInstance(LocalTime.of(11, 30), null);
    } catch (InvocationTargetException ex) {
      throw ex.getCause();
    }
  }