code: def _setup_tokenizer(self, tokenizer: object):  # pragma: no cover
          
          language_punkt_vars = PunktLanguageVars
          language_punkt_vars.sent_end_chars = self.external_punctuation
          language_punkt_vars.internal_punctuation = self.internal_punctuation
          tokenizer.INCLUDE_ALL_COLLOCS = True
          tokenizer.INCLUDE_ABBREV_COLLOCS = True
          params = tokenizer.get_params()
          return PunktSentenceTokenizer(params)
docs: Add tokenizer and punctuation variables.
          :type tokenizer: object
          :param tokenizer : Unpickled tokenizer object.
          :rtype : object