code: def setUpClass(cls) -> None:
      ray.init()
  
file_path: ray/rllib/core/testing/tests/test_bc_algorithm.py
imports: import unittest
  import gymnasium
  import ray
  from ray.rllib.core.testing.torch.bc_module import DiscreteBCTorchModule, BCTorchRLModuleWithSharedGlobalEncoder, BCTorchMultiAgentModuleWithSharedEncoder
  from ray.rllib.core.testing.tf.bc_module import DiscreteBCTFModule, BCTfRLModuleWithSharedGlobalEncoder, BCTfMultiAgentModuleWithSharedEncoder
  from ray.rllib.core.rl_module.rl_module import SingleAgentRLModuleSpec
  from ray.rllib.core.rl_module.marl_module import MultiAgentRLModuleSpec
  from ray.rllib.core.testing.bc_algorithm import BCConfigTest
  from ray.rllib.utils.test_utils import framework_iterator
  from ray.rllib.examples.env.multi_agent import MultiAgentCartPole
label_desc: Use image node_id 1 for calling the TestLearner obj's underlying member method code with example usage: obj.setUpClass(cls) without return types