private val EXCEPTION_RULE_MARKER: ByteString = "!".encodeUtf8()
  }
}

suspend fun main() {
  val publicSuffixListGenerator = PublicSuffixListGenerator()

  try {
    publicSuffixListGenerator.import()
  } finally {
    publicSuffixListGenerator.client.run {
      connectionPool.evictAll()
      dispatcher.executorService.shutdownNow()
    }
  }

  // The lists are held as a large array of UTF-8 bytes. This is to avoid allocating lots of strings
  // that will likely never be used. Each rule is separated by '\n'. Please see the
  // PublicSuffixListGenerator class for how these lists are generated.
  // Guarded by this.
  override lateinit var bytes: ByteString
  override lateinit var exceptionBytes: ByteString

  private var readFailure: IOException? = null