code: def stop(self, wait=False, timeout=0):
      self._cluster.stop(wait=wait, timeout=timeout)
  
imports: import asyncio
  import functools
  import logging
  import random
  import time
  import uuid
  from urllib.parse import urlparse
  from ...lib.aio import new_isolation, stop_isolation
  from ...services.cluster.api import WebClusterAPI
  from ...session import new_session
  from ...utils import calc_size_by_str
  from ..utils import wait_services_ready
  from .config import NamespaceConfig, RoleConfig, RoleBindingConfig, ServiceConfig, MarsSupervisorsConfig, MarsWorkersConfig
label_desc: Use image node_id 6 for calling the KubernetesClusterClient obj's underlying member method code with example usage: obj.stop(wait, timeout) without return types