class_docstr: Transforms an input by change its sentiment extent by adding adverb
  
  Example::
  
      ori: 卫生间不错，好用
      trans: 卫生间比较不错，有点好用
code: def __repr__(self):
      return "ExtentAdjust"
  
file_path: textflint/textflint/generation/transformation/SACN/Extent_Adjust.py
imports: from ..transformation import Transformation
  from ....common.settings import CNSA_EXTENT_LIST
  from random import choice
label_desc: Use image node_id 2 for calling the ExtentAdjust obj's underlying member method code with example usage: obj.__repr__() and returns: str