@Test
void testGetRollUpPermutationsAsBooleansTagCountOne() {

    final Set<List<Boolean>> perms = RollUpBitMask.getRollUpPermutationsAsBooleans(1);
    assertThat(perms.size()).isEqualTo(2);
    assertThat(perms.iterator().next().size()).isEqualTo(1);
    assertThat(perms.iterator().next().size()).isEqualTo(1);
}