| Add(HLLPolicy, Exp, Exp) | Create expression that adds list values to a HLL set and returns HLL set. The function assumes HLL bin already exists. |
| Add(HLLPolicy, Exp, Exp, Exp) | Create expression that adds values to a HLL set and returns HLL set. If HLL bin does not exist, use indexBitCount to create HLL bin. |
| Add(HLLPolicy, Exp, Exp, Exp, Exp) | Create expression that adds values to a HLL set and returns HLL set. If HLL bin does not exist, use indexBitCount and minHashBitCount to create HLL set. |