code: def __len__(self):
      return len(self.complet_data["src_tokens"])
  
file_path: DeepKE/src/deepke/name_entity_re/few_shot/module/datasets.py
imports: import torch
  from tqdm import tqdm
  import numpy
  from itertools import chain
  from torch.utils.data import Dataset, DataLoader
  from torch.nn.utils.rnn import pad_sequence
  from transformers import BartTokenizer, BertTokenizer
  import logging
label_desc: Use image node_id 2 for calling the ConllNERDataset obj's underlying member method code with example usage: obj.__len__() and returns: len