code: def _read_connected_file(connected_file):
      if os.path.exists(connected_file):
          with open(connected_file) as f:
              lines = [line.replace("\n", "") for line in f.readlines()]
              if len(lines) == 2:
                  return lines[0], lines[1]
              return lines[0], None
      return None, None
  
imports: import json
  import os
  import shutil
  import sys
  from subprocess import Popen
  from typing import List, Optional, Tuple
  import click
  import psutil
  from lightning_utilities.core.imports import package_available
  from rich.progress import Progress
  from lightning.app.utilities.cli_helpers import _get_app_display_name, _LightningAppOpenAPIRetriever
  from lightning.app.utilities.cloud import _get_project
  from lightning.app.utilities.enum import OpenAPITags
  from lightning.app.utilities.log import get_logfile
  from lightning.app.utilities.network import LightningClient
label_desc: Use image node_id 3 for calling a global function with example usage: _read_connected_file(connected_file) and returns: None,  None, lines,  None, lines,  lines