* @return the async notify response containing notifications
     * @throws IOException if the RPC call fails
     */
    public WitnessAsyncNotifyMessage.WitnessNotificationResponse getAsyncNotifications(byte[] contextHandle) throws IOException {
        if (!connected) {
            throw new IOException("Witness client not connected");
        }

        try {

                try {
                    // Request async notifications from server
                    WitnessAsyncNotifyMessage.WitnessNotificationResponse response = rpcClient.getAsyncNotifications(contextHandle);

                    if (response != null) {
                        // Process each notification message