queueSizeCfgVal := getCfgVal(EnvKafkaQueueSize, k, kv.Get(KafkaQueueSize))
		queueSize, err := strconv.Atoi(queueSizeCfgVal)
		if err != nil {
			return cfg, err
		}
		if queueSize <= 0 {
			return cfg, errInvalidQueueSize
		}
		kafkaArgs.QueueSize = queueSize

		cfg.AuditKafka[k] = kafkaArgs
	}

	return cfg, nil
}

     */
    public SimplexTransferListener(
            TransferListener delegate, int queueSize, int batchMaxSize, boolean blockOnLastEvent) {
        this.delegate = requireNonNull(delegate);
        if (queueSize < 1 || batchMaxSize < 1) {
            throw new IllegalArgumentException("Queue and batch sizes must be greater than 1");
        }
        this.batchMaxSize = batchMaxSize;

		},
		config.HelpKV{
			Key:         BatchSize,
			Description: "Number of events per HTTP send to webhook target",
			Optional:    true,
			Type:        "number",
		},
		config.HelpKV{
			Key:         QueueSize,
			Description: "configure channel queue size for webhook targets",
			Optional:    true,
			Type:        "number",
		},
		config.HelpKV{
			Key:         QueueDir,

	SASL struct {
		Enable    bool   `json:"enable"`
		User      string `json:"username"`
		Password  string `json:"password"`
		Mechanism string `json:"mechanism"`
	} `json:"sasl"`
	// Queue store
	QueueSize int    `json:"queueSize"`
	QueueDir  string `json:"queueDir"`

	// Custom logger
	LogOnce func(ctx context.Context, err error, id string, errKind ...interface{}) `json:"-"`
}

// Target - Kafka target.
type Target struct {

    }

    this.key = ByteArray(16).apply { random.nextBytes(this) }.toByteString().base64()
  }

  override fun request(): Request = originalRequest

  @Synchronized override fun queueSize(): Long = queueSize

  override fun cancel() {
    call!!.cancel()
  }

  fun connect(client: OkHttpClient) {
    if (originalRequest.header("Sec-WebSocket-Extensions") != null) {

	AuthToken  string            `json:"authToken"`
	ClientCert string            `json:"clientCert"`
	ClientKey  string            `json:"clientKey"`
	BatchSize  int               `json:"batchSize"`
	QueueSize  int               `json:"queueSize"`
	QueueDir   string            `json:"queueDir"`
	Proxy      string            `json:"string"`
	Transport  http.RoundTripper `json:"-"`

	// Custom logger

    return capAtMaximumSize(newCapacity, maximumSize);
  }

  /** There's no reason for the queueSize to ever be more than maxSize + 1 */
  private static int capAtMaximumSize(int queueSize, int maximumSize) {
    return Math.min(queueSize - 1, maximumSize) + 1; // don't overflow
  }

    return capAtMaximumSize(newCapacity, maximumSize);
  }

  /** There's no reason for the queueSize to ever be more than maxSize + 1 */
  private static int capAtMaximumSize(int queueSize, int maximumSize) {
    return Math.min(queueSize - 1, maximumSize) + 1; // don't overflow
  }

REGISTER_NO_GRADIENT_OP("QueueEnqueueMany");
REGISTER_NO_GRADIENT_OP("QueueDequeue");
REGISTER_NO_GRADIENT_OP("QueueDequeueMany");
REGISTER_NO_GRADIENT_OP("QueueDequeueUpTo");
REGISTER_NO_GRADIENT_OP("QueueClose");
REGISTER_NO_GRADIENT_OP("QueueSize");
REGISTER_NO_GRADIENT_OP("Stack");
REGISTER_NO_GRADIENT_OP("StackPush");
REGISTER_NO_GRADIENT_OP("StackPop");
REGISTER_NO_GRADIENT_OP("StackClose");
REGISTER_NO_GRADIENT_OP("GetSessionHandle");

    var messageCount: Long = 0
    while (true) {
      val success = webSocket.send(message)
      if (!success) break
      messageCount++
      val queueSize = webSocket.queueSize()
      assertThat(queueSize).isBetween(0L, messageCount * message.size)
      // Expect to fail before enqueueing 32 MiB.
      assertThat(messageCount).isLessThan(32L)
    }