code: def __getitem__(self, idx):
      return dict(
          input_ids=self.input_ids[idx],
          labels=self.labels[idx],
          attention_mask=self.attention_mask[idx],
      )
  
imports: import copy
  import json
  from typing import Dict, Sequence
  import torch
  from torch.utils.data import Dataset
  from tqdm import tqdm
  from transformers import AutoTokenizer
label_desc: Use image node_id 3 for calling the EasySFTDataset obj's underlying member method code with example usage: obj.__getitem__(idx) and returns: dict