class_docstr: Tests ModelV2 classes and their modularization capabilities.
class_docstr_tok: ["Tests","ModelV2","classes","and","their","modularization","capabilities","."]
code: def tearDownClass(cls) -> None:
      ray.shutdown()
  
file_path: ray/python/ray/rllib/models/tests/test_models.py
imports: from gymnasium.spaces import Box
  import numpy
  import unittest
  import ray
  import ray.rllib.algorithms.ppo
  from ray.rllib.examples.models.modelv3 import RNNModel
  from ray.rllib.models.tf.tf_modelv2 import TFModelV2
  from ray.rllib.models.tf.fcnet import FullyConnectedNetwork
  from ray.rllib.utils.framework import try_import_tf
label_desc: Use image node_id 2 for calling the TestModels obj's underlying member method code with example usage: obj.tearDownClass(cls) without return types