@Override
        public boolean contains(int band, int[] hashes) {
            byte[] hashtableKey = createKey(band, hashes);
            byte[] bitmapBytes = super.get(hashtableKey);
            return bitmapBytes != null;
        }
Finds the number of bands that need to be used for a given similarity threshold.

@param nHashes
@param jaccardThreshold
@return
ache/src/main/java/achecrawler/minhash/LSH.java