code: def stop_words(self, words):
      self._stop_words = frozenset(map(self.normalize_word, words))
  
file_path: sumy/sumy/summarizers/luhn.py
imports: from __future__ import absolute_import
  from __future__ import division, print_function, unicode_literals
  from ..models import TfDocumentModel
  from ._summarizer import AbstractSummarizer
label_desc: Use image node_id 2 for calling the LuhnSummarizer obj's underlying member method code with example usage: obj.stop_words(words) without return types