}
            ftpClient.setAutodetectUTF8(autodetectEncoding);
            ftpClient.setConnectTimeout(connectTimeout);
            ftpClient.setDataTimeout(Duration.ofMillis(dataTimeout));
            ftpClient.setControlEncoding(controlEncoding);
            ftpClient.setBufferSize(bufferSize);
            if (passiveNatWorkaround) {

              socket.receiveBufferSize = socketBufferSize
              socket.sendBufferSize = socketBufferSize
              return socket
            }
          },
        ).writeTimeout(Duration.ofMillis(500))
        .build()
    server.start()
    server.enqueue(
      MockResponse
        .Builder()
        .throttleBody(1, 1, TimeUnit.SECONDS)
        .build(),