class_docstr: Uses languagetool to determine if two sentences have the same number of
  grammatical erors. (https://languagetool.org/)
  
  Args:
      grammar_error_threshold (int): the number of additional errors permitted in `x_adv`
          relative to `x`
      compare_against_original (bool): If `True`, compare against the original text.
          Otherwise, compare against the most recent text.
      language: language to use for languagetool (available choices: https://dev.languagetool.org/languages)
code: def extra_repr_keys(self):
      return ["grammar_error_threshold"] + super().extra_repr_keys()
  
file_path: TextAttack/textattack/constraints/grammaticality/language_tool.py
imports: import language_tool_python
  from textattack.constraints import Constraint
label_desc: Use image node_id 4 for calling the LanguageTool obj's underlying member method code with example usage: obj.extra_repr_keys() and returns: unknown