// Guarded by this.
  override lateinit var bytes: ByteString
  override lateinit var exceptionBytes: ByteString

  private var readFailure: IOException? = null

  @Throws(IOException::class)
  private fun readTheList() {
    var publicSuffixListBytes: ByteString?
    var publicSuffixExceptionListBytes: ByteString?

    try {
      listSource().buffer().use { bufferedSource ->
        val totalBytes = bufferedSource.readInt()