if cr.offset > 0 {
		n = copy(buf, cr.buffer[cr.offset:])
		if n == len(buf) {
			cr.offset += n
			return n, nil
		}
		cr.offset = 0
		buf = buf[n:]
	}
	// mustRead reads from input and compares against provided slice.
	mustRead := func(b ...byte) error {
		for _, want := range b {
			got, err := cr.reader.ReadByte()
			if err == io.EOF {
				return io.ErrUnexpectedEOF
			}
			if got != want {

        this.selected = callArgs[0] as String // Server selected this protocol.
        return null
      } else {
        return method.invoke(this, *callArgs)
      }
    }
  }

  companion object {
    fun buildIfSupported(): Platform? {
      val jvmVersion = System.getProperty("java.specification.version", "unknown")
      try {
        // 1.8, 9, 10, 11, 12 etc
        val version = jvmVersion.toInt()

      setHeader("Connection", "Upgrade")
      setHeader("Upgrade", "websocket")
      body = null
      webSocketListener = listener
    }

  override fun toString(): String = status

  companion object {
    private const val CHUNKED_BODY_HEADER = "Transfer-encoding: chunked"
  }

     * @param clientMap The map of clients.
     */
    @Override
    public void setClientMap(final Map<Pattern, CrawlerClient> clientMap) {
        factory.setClientMap(clientMap);
    }

    /**
     * Compares this wrapper to another object for equality.
     * Equality is determined by the wrapped factory.
     * @param obj The object to compare.
     * @return true if equal, false otherwise.
     */
    @Override

  fun close() {
    val okHttpClient = client as OkHttpClient
    okHttpClient.connectionPool.evictAll() // Close any persistent connections.
    okHttpClient.dispatcher.executorService.shutdownNow()
  }

  companion object {
    internal const val NAME = "okcurl"
    internal const val DEFAULT_TIMEOUT = -1

    private fun versionString(): String? {
      val prop = Properties()

   */
  @CanIgnoreReturnValue
  @Override
  public boolean put(@ParametricNullness K key, @ParametricNullness V value) {
    return super.put(key, value);
  }

  /**
   * Compares the specified object to this multimap for equality.
   *
   * <p>Two {@code SetMultimap} instances are equal if, for each key, they contain the same values.
   * Equality does not depend on the ordering of keys or values.

     *   <li>Ensures no null repository entries exist in the list</li>
     * </ul>
     *
     * <p>Duplicate detection is based on the {@code RemoteRepository#equals(Object)}
     * method, which typically compares repository IDs and URLs.
     *
     * @param repositories the list of repositories to validate, may be {@code null}
     * @return the same list if validation passes, or {@code null} if input was {@code null}

     *
     * @return the hash code value for this object
     */
    @Override
    public int hashCode() {
        return Objects.hash(Arrays.hashCode(inputs), output);
    }

    /**
     * Compares this CharMappingItem with another object for equality.
     * Two CharMappingItem objects are equal if they have the same inputs and output.
     * Note: inputs arrays are sorted in the constructor, so no sorting is needed here.

  fun isIdle() = taskRunner.activeQueues().isEmpty()

  override fun close() {
    tasksExecutor.shutdownNow()
  }

  companion object {
    var instance = 0
  }

 */
package okhttp3.internal.idn

import java.io.IOException
import okio.Buffer
import okio.BufferedSink
import okio.BufferedSource
import okio.ByteString
import okio.ByteString.Companion.encodeUtf8
import okio.Options

/**
 * A decoded [mapping table] that can perform the [mapping step] of IDNA processing.
 *
 * This implementation is optimized for readability over efficiency.
 *