code: def __getitem__(self, index):
      return Subset.__getitem__(self, index)
  
imports: from torch.utils.data import ConcatDataset, Subset
  from torch.utils.data import Dataset
  from torchvision.transforms import Compose
label_desc: Use image node_id 2 for calling the SubsetTask obj's underlying member method code with example usage: obj.__getitem__(index) and returns: Subset