class_docstr: Transforms an input by replacing its tokens with words of mask language
  predicted.
  To accelerate transformation for long text, input single sentence to
  language model rather than whole text.
code: def __repr__(self):
      return "MLMSuggestion"
  
file_path: textflint/textflint/generation/transformation/UTCN/cn_mlm_suggestion.py
imports: import torch
  from ....common import device
  from ...transformation import CnWordSubstitute
  from ....common.settings import CN_BERT_MODEL_NAME
  from ....common.utils.list_op import trade_off_sub_words
label_desc: Use image node_id 2 for calling the MLMSuggestion obj's underlying member method code with example usage: obj.__repr__() and returns: str