HLL hll = new HLL(log2m, regw, expthr, sparse, hllType);
for(final Long item: items) {
hll.addRaw(item);
}
HLL copy = HLL.fromBytes(hll.toBytes());
assertEquals(copy.cardinality(), hll.cardinality());
assertEquals(copy.getType(), hll.getType());
assertEquals(copy.toBytes(), hll.toBytes());
HLL clone = hll.clone();
assertEquals(clone.cardinality(), hll.cardinality());