class_docstr: Word replace transformation to implement normal word replace functions.
class_docstr_tok: ["Word","replace","transformation","to","implement","normal","word","replace","functions","."]
code: def chars2token(chars):
      assert isinstance(chars, list)
  
      return "".join(chars)
  
file_path: textflint/textflint/generation/transformation/word_substitute.py
imports: import string
  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 10 for calling the WordSubstitute obj's underlying member method code with example usage: obj.chars2token(chars) and returns: str