class_docstr: Word replace transformation to implement normal word replace functions.
docstr: Returns a list containing all possible words .
  
  :param str word:
  :param str pos: the pos tag
  :return list: candidates list
docstr_tok: ["Returns","a","list","containing","all","possible","words",".",":","param","str","word",":",":","param","str","pos",":","the","pos","tag",":","return","list",":","candidates","list"]
code: def _get_candidates(self, word, pos=None, n=5, **kwargs):
      r"""
      Returns a list containing all possible words .
  
      :param str word:
      :param str pos: the pos tag
      :return list: candidates list
  
      """
      raise NotImplementedError
  
file_path: textflint/textflint/generation/transformation/cn_word_substitute.py
imports: from abc import abstractmethod
  from ..transformation import Transformation
  from ...common.settings import STOP_WORDS, ORIGIN
  from ...common.utils.list_op import trade_off_sub_words
label_desc: Use image node_id 4 for calling the CnWordSubstitute obj's underlying member method code with example usage: obj._get_candidates(word, pos, n) without return types