docs: def run(main=None, argv=None):
      """Runs the program with an optional 'main' function and 'argv' list."""
      flags_obj = flags.FLAGS
      absl_flags_obj = absl_flags.FLAGS
  
      # Extract the args from the optional `argv` list.
      args = argv[1:] if argv else None
  
      # Parse the known flags from that list, or from the command
      # line otherwise.
      # pylint: disable=protected-access
      flags_passthrough = flags_obj._parse_flags(args=args)
      # pylint: enable=protected-access
  
      # Immediately after flags are parsed, bump verbosity to INFO if the flag has
      # not been set.
      if absl_flags_obj["verbosity"].using_default_value:
          absl_flags_obj.verbosity = 0
  
      main = main or sys.modules['__main__'].main
  
      # Call the main function, passing through any arguments
      # to the final program.
      sys.exit(main(sys.argv[:1] + flags_passthrough))