code: def __init__(self, toks):
      self.text = " ".join([t.lower_ for t in toks])
  
imports: import re
  from collections import Counter
  from unittest import TestCase
  from scattertext import whitespace_nlp
  from scattertext.WhitespaceNLP import Tok, Doc, _regex_parse_sentence, whitespace_nlp_with_sentences
  from scattertext.features.FeatsFromSpacyDoc import FeatsFromSpacyDoc
  from scattertext.features.FeatsFromSpacyDocOnlyNounChunks import FeatsFromSpacyDocOnlyNounChunks
label_desc: Use image node_id 1 to create a new Span object  with example: obj = Span(toks)