code: def __enter__(self):
      self.client.connect(
          self.hostname,
          self.port,
          self.username,
          pkey=self.key,
          timeout=5,
          auth_timeout=5,
          banner_timeout=5,
      )
      return self
  
imports: import json
  import logging
  import os
  import sys
  import time
  import threading
  import paramiko
  from .CPUResourceManager import CPUResourceManager
  from ...utils import check_missing_key, load_default_env, parse_result, DEFAULT_AUPTIMIZER_PATH, block_until_ready
  from ...utils import open_sftp_with_timeout, parse_one_line
  from ..Job import Job
label_desc: Use image node_id 3 for calling the Remote obj's underlying member method code with example usage: obj.__enter__() and returns: self