BigInteger hashkey = FBUtilities.hash(ks.key);
this.currentToken = hashkey;
...

KeyRange kr = new KeyRange();
kr.setStart_token(this.currentToken.toString());
kr.setEnd_token(this.endToken.toString());
kr.setCount(this.keyRangeSize);
List<KeySlice> results = client.get_range_slices(this.runArgs.get("ks"),
parent, pred, kr, this.readConsistencyLevel);