var wildcardMatch: String? = null
    if (domainLabelsUtf8Bytes.size > 1) {
      val labelsWithWildcard = domainLabelsUtf8Bytes.clone()
      for (labelIndex in 0 until labelsWithWildcard.size - 1) {
        labelsWithWildcard[labelIndex] = WILDCARD_LABEL
        val rule = publicSuffixList.bytes.binarySearch(labelsWithWildcard, labelIndex)
        if (rule != null) {
          wildcardMatch = rule
          break
        }