@Test public void validId() {

    assertTrue("1610255800005 should be valid", CitizenId.isValid("1610255800005"));
    assertTrue("1610255811112 should be valid", CitizenId.isValid("1610255811112"));
    assertTrue("1610255822220 should be valid", CitizenId.isValid("1610255822220"));
    assertTrue("pretty format id should be valid", CitizenId.isValid("1-6102-55800-00-5"));
}