code: def setUpClass(cls) -> None:
      ray.init(num_cpus=4)
  
file_path: ray/python/ray/rllib/evaluation/tests/test_envs_that_crash.py
imports: import unittest
  import ray
  from ray.rllib.algorithms.pg import PGConfig
  from ray.rllib.algorithms.ppo import PPOConfig
  from ray.rllib.algorithms.tests.test_worker_failures import ForwardHealthCheckToEnvWorker
  from ray.rllib.examples.env.cartpole_crashing import CartPoleCrashing
  from ray.rllib.utils.error import EnvError
label_desc: Use image node_id 1 for calling the TestEnvsThatCrash obj's underlying member method code with example usage: obj.setUpClass(cls) without return types