code: def use_metadata(self) -> "CorpusBasedTermScorer":
      self.use_metadata_ = True
      self.term_ranker_.use_non_text_features()
      return self
  
imports: from abc import ABCMeta, abstractmethod
  from typing import Tuple
  import numpy
  import pandas
  from scattertext.ParsedCorpus import ParsedCorpus
  from scipy import stats
  from scipy.sparse import vstack
  from scattertext.util import inherits_from
  from scattertext.termranking import AbsoluteFrequencyRanker
  from scattertext.termranking.TermRanker import TermRanker
label_desc: Use image node_id 9 for calling the CorpusBasedTermScorer obj's underlying member method code with example usage: obj.use_metadata() and returns: self