code: def setUpClass(cls):
      ray.init()
  
file_path: ray/python/ray/rllib/algorithms/cql/tests/test_cql.py
imports: import numpy
  from pathlib import Path
  import os
  import unittest
  import ray
  from ray.rllib.algorithms import cql
  from ray.rllib.utils.framework import try_import_tf, try_import_torch
  from ray.rllib.utils.test_utils import check_compute_single_action, check_train_results, framework_iterator
label_desc: Use image node_id 1 for calling the TestCQL obj's underlying member method code with example usage: obj.setUpClass(cls) without return types