code: def setUpClass(cls) -> None:
      ray.init()
  
file_path: ray/rllib/utils/tests/test_torch_utils.py
imports: import unittest
  import numpy
  import torch.cuda
  import ray
  from ray.rllib.utils.torch_utils import convert_to_torch_tensor, copy_torch_tensors
label_desc: Use image node_id 1 for calling the TestTorchUtils obj's underlying member method code with example usage: obj.setUpClass(cls) without return types