code: def __getitem__(self, item):
      return item
  
file_path: espnet/test/espnet2/iterators/test_sequence_iter_factory.py
imports: import pytest
  import torch
  from espnet2.iterators.sequence_iter_factory import SequenceIterFactory
label_desc: Use image node_id 1 for calling the Dataset obj's underlying member method code with example usage: obj.__getitem__(item) and returns: item