var currentLabelIndex = labelIndex
        var currentLabelByteIndex = 0
        var publicSuffixByteIndex = 0

        var expectDot = false
        while (true) {
          val byte0: Int
          if (expectDot) {
            byte0 = '.'.code
            expectDot = false
          } else {
            byte0 = labels[currentLabelIndex][currentLabelByteIndex] and 0xff
          }