code: def test_dataloader(self):
      return DataLoader(
          self.mnist_test, batch_size=self.batch_size, shuffle=False
      )
  
imports: import torch
  from lightning.pytorch.core.datamodule import LightningDataModule
  from lightning_utilities.core.imports import RequirementCache
  from torch.utils.data import DataLoader
  from tests_pytorch.helpers.datasets import MNIST, SklearnDataset, TrialMNIST
label_desc: Use image node_id 5 for calling the MNISTDataModule obj's underlying member method code with example usage: obj.test_dataloader() and returns: DataLoader