code: public boolean mightContain(T item) {
  		BucketAndTag pos = hasher.generate(item);
  		long i1 = pos.index;
  		long i2 = hasher.altIndex(pos.index, pos.tag);
  		bucketLocker.lockBucketsRead(i1, i2);
  		try {
  			if (table.findTag(i1, i2, pos.tag)) {
  				return true;
  			}
  		} finally {
  			bucketLocker.unlockBucketsRead(i1, i2);
  		}
  		return checkIsVictim(pos);
  	}
docs: Returns {@code true} if the element <i>might</i> have been put in this
  Cuckoo filter, {@code false} if this is <i>definitely</i> not the case.
  
  @param item
  to check
  
  @return true if the item might be in the filter