docs: public static long maximumSerializedSize(long cardinality, long universe_size) {
      long contnbr = (universe_size + 65535) / 65536;
      if (contnbr > cardinality) {
        contnbr = cardinality;
        // we can't have more containers than we have values
      }
      final long headermax = Math.max(8, 4 + (contnbr + 7) / 8) + 8 * contnbr;
      final long valsarray = 2 * cardinality;
      final long valsbitmap = contnbr * 8192;
      final long valsbest = Math.min(valsarray, valsbitmap);
      return valsbest + headermax;
    }