code: def __init__(
      self,
      suite: Optional[TestSuite] = None,
      context_key: str = "context",
      question_key: str = "question",
      answer_key: str = "best_span_str",
      **kwargs,
  ):
      self._context_key = context_key
      self._question_key = question_key
      self._answer_key = answer_key
  
      super().__init__(suite, **kwargs)
  
imports: from typing import Optional, Iterable, Tuple, Union
  import itertools
  import numpy
  from checklist.editor import MunchWithAdd
  from checklist.test_suite import TestSuite
  from checklist.test_types import MFT
  from checklist.perturb import Perturb
  from allennlp.confidence_checks.task_checklists.task_suite import TaskSuite
  from allennlp.confidence_checks.task_checklists import utils
  from allennlp.predictors import Predictor
label_desc: Use image node_id 1 to create a new QuestionAnsweringSuite object from inherited base classes: TaskSuite with example: obj = QuestionAnsweringSuite(suite, context_key, question_key, answer_key)