static AllOrNoneValueSet none(Type type)
    {
        return new AllOrNoneValueSet(type, false);
    }
@Test
    public void testNone()
    {
        AllOrNoneValueSet valueSet = AllOrNoneValueSet.none(HYPER_LOG_LOG);
        assertEquals(valueSet.getType(), HYPER_LOG_LOG);
        assertTrue(valueSet.isNone());
        assertFalse(valueSet.isAll());
        assertFalse(valueSet.isSingleValue());
        assertFalse(valueSet.containsValue(Slices.EMPTY_SLICE));
        assertThrows(UnsupportedOperationException.class, valueSet::getSingleValue);
    }