code: def setUp(self):
      pass
  
imports: import shutil
  import tempfile
  import unittest
  import pytorch_lightning
  from ray.train import CheckpointConfig
  import torch
  from ray.air.constants import TRAINING_ITERATION
  from torch.utils.data import DataLoader, Dataset
  from ray import train, tune
  from ray.tune.integration.pytorch_lightning import TuneReportCheckpointCallback
label_desc: Use image node_id 1 for calling the PyTorchLightningIntegrationTest obj's underlying member method code with example usage: obj.setUp() without return types