code: def __init__(self, label_idx=-1):
      # in NER datasets, the last column is usually reserved for NER label
      self.label_idx = label_idx
  
file_path: underthesea/examples/ner/tasks.py
imports: import logging
  import os
  from typing import List, TextIO, Union
  from conllu import parse_incr
  from utils_ner import InputExample, Split, TokenClassificationTask
label_desc: Use image node_id 1 to create a new NER object from inherited base classes: TokenClassificationTask with example: obj = NER(label_idx)