class_docstr: Swap entities which shorter than threshold to longer ones.
class_docstr_tok: ["Swap","entities","which","shorter","than","threshold","to","longer","ones","."]
code: def __repr__(self):
      return self.swap_type
  
file_path: textflint/textflint/generation/transformation/NERCN/swap_ent.py
imports: import random
  from ....common.settings import CN_LONG_ENTITIES
  from ....common.settings import CN_OOV_ENTITIES, LABEL_TRANS
  from ....common.utils.install import download_if_needed
  from ....common.utils.load import json_loader
  from ..transformation import Transformation
label_desc: Use image node_id 2 for calling the SwapEnt obj's underlying member method code with example usage: obj.__repr__() and returns: self