class_docstr: Create a local autoscaling cluster for testing.
  
  See test_autoscaler_fake_multinode.py for an end-to-end example.
docstr: Terminate the cluster.
docstr_tok: ["Terminate","the","cluster","."]
code: def shutdown(self):
      """Terminate the cluster."""
      subprocess.check_call(["ray", "stop", "--force"])
  
imports: import copy
  import json
  import logging
  import os
  import subprocess
  import tempfile
  import time
  from typing import Dict, Optional
  import yaml
  import ray
  import ray._private.services
  from ray._private import ray_constants
  from ray._private.client_mode_hook import disable_client_hook
  from ray._raylet import GcsClientOptions
  from ray.util.annotations import DeveloperAPI
label_desc: Use image node_id 4 for calling the AutoscalingCluster obj's underlying member method code with example usage: obj.shutdown() without return types