code: def open_sftp_with_timeout(client, timeout=5):
      """
      SFTP Connection to transfer files and environment between Auptimizer source machine and remote machine.
      """
      t = client.get_transport()
      chan = t.open_session(
          window_size=None, max_packet_size=None, timeout=timeout
      )
      if chan is None:
          return None
      chan.invoke_subsystem("sftp")
      return SFTPClient(chan)
  
imports: from __future__ import print_function
  import sys
  import logging
  import os
  from os import path
  from six.moves import input
  from six.moves.configparser import ConfigParser
  import paramiko
  from paramiko import SFTPClient
  from .aup import BasicConfig, print_result
label_desc: Use image node_id 10 for calling a global function with example usage: open_sftp_with_timeout(client, timeout) and returns: SFTPClient, None