code: def prepare_data(self):
      pass
  
file_path: generative-models/sgm/data/cifar10.py
imports: import pytorch_lightning
  import torchvision
  from torch.utils.data import DataLoader, Dataset
  from torchvision import transforms
label_desc: Use image node_id 2 for calling the CIFAR10Loader obj's underlying member method code with example usage: obj.prepare_data() without return types