code: def replace(self, character: str) -> List[str]:
      return (
          self.mapping[character.lower()]
          if character.lower() in self.mapping
          else [character]
      )
  
file_path: AugLy/augly/text/augmenters/letter_replacement.py
imports: import json
  from typing import List, Optional
  from augly.text.augmenters.utils import get_aug_idxes, LETTER_CHAR_MAPPING, rejoin_words_and_whitespace, split_words_on_whitespace, validate_augmenter_params
  from augly.utils import pathmgr
  from augly.utils.libsndfile import install_libsndfile
  from nlpaug.augmenter.char import CharAugmenter
  from nlpaug.util import Action, Method
label_desc: Use image node_id 2 for calling the CharReplacement obj's underlying member method code with example usage: obj.replace(character) and returns: unknown