class_docstr: This should be a pickable class.
class_docstr_tok: ["This","should","be","a","pickable","class","."]
code: def gen_stop(self):
      def _stop(iter):
          command = "{} stop".format(self.ray_exec)
          print("Start to end the ray services: {}".format(command))
          session_execute(command=command, fail_fast=True)
          return iter
  
      return _stop
  
imports: import os
  import re
  import subprocess
  import time
  import uuid
  import random
  import warnings
  import tempfile
  import filelock
  import multiprocessing
  from packaging import version
  from zoo.ray.process import session_execute, ProcessMonitor
  from zoo.ray.utils import is_local
  from zoo.ray.utils import resource_to_bytes
  from zoo.ray.utils import get_parent_pid
label_desc: Use image node_id 3 for calling the RayServiceFuncGenerator obj's underlying member method code with example usage: obj.gen_stop() and returns: _stop, iter