code: def __getitem__(self, index):
      return index
  
imports: import logging
  import numpy
  import torch
  from fairseq.data import Dictionary, FairseqDataset
  from fairseq.tasks import LegacyFairseqTask, register_task
label_desc: Use image node_id 2 for calling the DummyDataset obj's underlying member method code with example usage: obj.__getitem__(index) and returns: index