}
static List<Integer> generateKeys() {
List<Integer> keys;
/** this is what's used for inducing ordering */
MurmurHash2 hashFunction = new MurmurHash2();
keys = new ArrayList<Integer>(2);
int count = 0;
keys.add(count);
while (keys.size() < 2) {
final int hash = hashFunction.hash(++count);
if (!keys.contains(hash)) keys.add(count);
}
return keys;
}