return new StandardNavigableKeySet();
    }

    @Override
    public NavigableSet<K> descendingKeySet() {
      return standardDescendingKeySet();
    }

    @Override
    public K firstKey() {
      return standardFirstKey();
    }

    @Override
    public SortedMap<K, V> headMap(K toKey) {
      return standardHeadMap(toKey);
    }

    @Override
    public K lastKey() {

int { return roundKeyOffset + key }, "regs_batches": func(firstReg, nregs int) []RegsBatch { result := make([]RegsBatch, 0) for nregs != 0 { batch := 4 if nregs < batch { batch = nregs } regsList := make([]string, 0, batch) for j := firstReg; j < firstReg+batch; j++ { regsList = append(regsList, fmt.Sprintf("V%d.B16", j)) } result = append(result, RegsBatch{ Size: 16 * batch, Regs: strings.Join(regsList, ", "), }) nregs -= batch firstReg += batch } return result }, "enc_args": func(key, n int, withMc...