code: def tearDown(self) -> None:
      ray.shutdown()
  
file_path: ray/rllib/tests/test_local.py
imports: import unittest
  import ray
  from ray.rllib.algorithms.ppo import PPOConfig
  from ray.rllib.utils.test_utils import framework_iterator
label_desc: Use image node_id 2 for calling the LocalModeTest obj's underlying member method code with example usage: obj.tearDown() without return types