code: def __init__(self, *datasets):
      self.datasets = datasets
  
imports: from unittest import TestCase
  import operator
  import pytest
  import torch
  from torch.utils.data import TensorDataset, DataLoader, Dataset
  from torch import nn
  import torchmetrics
  from bigdl.nano.pytorch import Trainer
  from bigdl.nano.utils.common import compare_version
label_desc: Use image node_id 1 to create a new ChainTensorDataset object from inherited base classes: Dataset with example: obj = ChainTensorDataset()