@Override
    public boolean add(final Long value) {
        return add(value.longValue());
    }
@Test
    public void testLongArrayConstructor() {
        long[] items = {42L, 43L};
        long missingValue = -1L;
        final LongHashSet hashSet = new LongHashSet(items, missingValue);

        set.add(42L);
        set.add(43L);

        assertEquals(set, hashSet);
    }