code: def check_process_zombie(server_id):
      """
      Given a server id, check whether the process became zoombie and mark pid as -1.
      Args:
          server_id(str): fastdeployserver process name
      Return:
          status(bool): True if process became zoombie.
      """
      pid = get_process_pid(server_id)
      if pid == -1:
          return True
      else:
          return False
  
imports: import copy
  import json
  import os
  import random
  import re
  import signal
  import string
  from collections import defaultdict
  from subprocess import Popen
  from subprocess import STDOUT
  import google.protobuf.json_format
  import google.protobuf.text_format
  import psutil
  import requests
  from .proto.model_config_pb2 import ModelConfig
  from visualdl.utils.dir import FASTDEPLOYSERVER_PATH
label_desc: Use image node_id 23 for calling a global function with example usage: check_process_zombie(server_id) and returns: True, False