code: def __getitem__(self, index):
      return 1
  
imports: import pickle
  from argparse import Namespace
  from dataclasses import dataclass
  from typing import Any, Dict
  from unittest import mock
  from unittest.mock import Mock, PropertyMock, call
  import pytest
  import torch
  from lightning.pytorch import LightningDataModule, Trainer, seed_everything
  from lightning.pytorch.callbacks import ModelCheckpoint
  from lightning.pytorch.demos.boring_classes import BoringDataModule, BoringModel
  from lightning.pytorch.profilers.simple import SimpleProfiler
  from lightning.pytorch.trainer.states import TrainerFn
  from lightning.pytorch.utilities import AttributeDict
  from lightning.pytorch.utilities.exceptions import MisconfigurationException
  from lightning.pytorch.utilities.imports import _OMEGACONF_AVAILABLE
  from tests_pytorch.helpers.datamodules import ClassifDataModule
  from tests_pytorch.helpers.runif import RunIf
  from tests_pytorch.helpers.simple_models import ClassificationModel
label_desc: Use image node_id 1 for calling the DummyDS obj's underlying member method code with example usage: obj.__getitem__(index) and returns: int