code: def setUpClass(cls):
      ray.init()
  
file_path: ray/rllib_contrib/ars/tests/test_ars.py
imports: import unittest
  from rllib_ars.ars.ars import ARSConfig
  import ray
  from ray.rllib.utils.test_utils import check_compute_single_action, framework_iterator
label_desc: Use image node_id 1 for calling the TestARS obj's underlying member method code with example usage: obj.setUpClass(cls) without return types