static UBreak create(@Nullable CharSequence label) {
    return new UBreak((label == null) ? null : StringName.of(label));
  }
@Test
  public void equality() {
    new EqualsTester()
        .addEqualityGroup(UBreak.create(null))
        .addEqualityGroup(UBreak.create("foo"))
        .addEqualityGroup(UBreak.create("bar"))
        .testEquals();
  }