code: def __getitem__(self, i) -> Tuple[int, List[torch.Tensor]]:
      return (i, [self.data[idx] for idx in self.my_indices[:, i]])
  
imports: import logging
  import os
  from dataclasses import dataclass, field
  from typing import List, Optional, Tuple
  import torch
  from fairseq import utils
  from fairseq.data import Dictionary, TokenBlockDataset, data_utils, iterators
  from fairseq.dataclass import FairseqDataclass
  from fairseq.distributed import utils
  from fairseq.tasks import FairseqTask, register_task
  from omegaconf import II
label_desc: Use image node_id 3 for calling the TruncatedBPTTDataset obj's underlying member method code with example usage: obj.__getitem__(i) and returns: i,  unknown