code: def setUpClass(cls) -> None:
      ray.init()
  
file_path: ray/rllib_contrib/leela_chess_zero/tests/test_leela_chess_zero.py
imports: import unittest
  import rllib_leela_chess_zero.leela_chess_zero.leela_chess_zero
  from rllib_leela_chess_zero.leela_chess_zero.leela_chess_zero_model import LeelaChessZeroModel
  import ray
  from ray.rllib.examples.env.pettingzoo_chess import MultiAgentChess
  from ray.rllib.utils.test_utils import check_train_results, framework_iterator
label_desc: Use image node_id 1 for calling the TestLeelaChessZero obj's underlying member method code with example usage: obj.setUpClass(cls) without return types