private const val HEADER_WEB_SOCKET_EXTENSION = "Sec-WebSocket-Extensions"

    @Throws(IOException::class)
    fun parse(responseHeaders: Headers): WebSocketExtensions {
      // Note that this code does case-insensitive comparisons, even though the spec doesn't specify
      // whether extension tokens and parameters are case-insensitive or not.

      var compressionEnabled = false
      var clientMaxWindowBits: Int? = null

HSPLkotlin/collections/builders/ListBuilder;->insertAtInternal(II)V
HSPLkotlin/collections/builders/ListBuilder;->iterator()Ljava/util/Iterator;
HSPLkotlin/comparisons/NaturalOrderComparator;-><clinit>()V
HSPLkotlin/comparisons/NaturalOrderComparator;-><init>()V
HSPLkotlin/comparisons/NaturalOrderComparator;->compare(Ljava/lang/Object;Ljava/lang/Object;)I

  val b1 = this[index + 1].code
  return (b0 shl 7) + b1
}

/**
 * An extremely generic binary search that doesn't know what data it's searching over. The caller
 * provides indexes and a comparison function, and this calls that function iteratively.
 *
 * @return the index of the match. If no match is found this is `(-1 - insertionPoint)`, where the
 *     inserting the element at `insertionPoint` will retain sorted order.