code: def __str__(self):
      return self.lower_
  
file_path: scattertext/scattertext/WhitespaceNLP.py
imports: import re
  from scattertext.emojis.ProcessedEmojiStructure import VALID_EMOJIS
label_desc: Use image node_id 2 for calling the Tok obj's underlying member method code with example usage: obj.__str__() and returns: self