code: def tearDownClass(cls) -> None:
      ray.shutdown()
  
imports: import unittest
  import numpy
  from scipy.stats import norm
  import ray
  import ray.rllib.algorithms.dqn
  import ray.rllib.algorithms.ppo
  import ray.rllib.algorithms.sac
  from ray.rllib.utils.framework import try_import_tf
  from ray.rllib.utils.numpy import MAX_LOG_NN_OUTPUT, MIN_LOG_NN_OUTPUT, fc, one_hot
  from ray.rllib.utils.test_utils import check, framework_iterator
label_desc: Use image node_id 2 for calling the TestComputeLogLikelihood obj's underlying member method code with example usage: obj.tearDownClass(cls) without return types