code: def val_dataloader(self):
      return DataLoader(RandomDataset(32, 64))
  
imports: from typing import Optional
  import torch
  from pytorch_lightning import LightningDataModule, LightningModule
  from torch.utils.data import DataLoader, Dataset, Subset
label_desc: Use image node_id 14 for calling the BoringModel obj's underlying member method code with example usage: obj.val_dataloader() and returns: DataLoader