code: function (ints) {
      var ret = '0x'
      for (var i = 0; i < ints.length; i++) {
        var h = ints[i]
        if (h) {
          ret += (h <= 0xf ? '0' : '') + h.toString(16)
        } else {
          ret += '00'
        }
      }
      return ret
    }
docs: /*
  ints: IntArray