code: def val_dataloader(self) -> DataLoader:
      return DataLoader(DummyDataset())
  
imports: import shutil
  import tempfile
  from pathlib import Path
  import pytorch_lightning
  import torch
  import torch.nn.functional
  from torch import nn
  from torch.utils.data import DataLoader, Dataset
  from anomalib.utils.loggers.tensorboard import AnomalibTensorBoardLogger
label_desc: Use image node_id 2 for calling the DummyDataModule obj's underlying member method code with example usage: obj.val_dataloader() and returns: DataLoader