code: def setUpClass(cls) -> None:
      ray.init()
  
file_path: ray/rllib_contrib/td3/tests/test_td3.py
imports: import unittest
  import numpy
  import rllib_td3.td3.td3
  import ray
  from ray.rllib.utils.framework import try_import_tf
  from ray.rllib.utils.numpy import convert_to_numpy
  from ray.rllib.utils.test_utils import check, check_compute_single_action, check_train_results, framework_iterator
label_desc: Use image node_id 1 for calling the TestTD3 obj's underlying member method code with example usage: obj.setUpClass(cls) without return types