code: def task(self):
      raise NotImplementedError()
  
imports: from abc import ABC
  import numpy
  import torch
  from dataclasses import dataclass
  from typing import List, Tuple
  from jiant.tasks.core import BaseExample, BaseTokenizedExample, BaseDataRow, BatchMixin, Task, TaskTypes
  from jiant.tasks.lib.templates.shared import create_input_set_from_tokens_and_segments, add_cls_token
  from jiant.tasks.utils import ExclusiveSpan, truncate_sequences
  from jiant.utils import retokenize
  from jiant.utils.tokenization_normalization import normalize_tokenizations
label_desc: Use image node_id 1 for calling the Example obj's underlying member method code with example usage: obj.task() without return types