code: def test_get_all_content_words_in_doc():
      summarizer = _build_summarizer(EMPTY_STOP_WORDS)
      s0 = Sentence("One two three.", Tokenizer("english"))
      s1 = Sentence("One two three.", Tokenizer("english"))
      document = build_document([s0, s1])
  
      content_words = summarizer._get_all_content_words_in_doc(
          document.sentences
      )
      content_words_freq = {}
      for w in content_words:
          content_words_freq[w] = content_words_freq.get(w, 0) + 1
      content_words_correct = {"one": 2, "two": 2, "three": 2}
      assert content_words_freq == content_words_correct
  
file_path: sumy/tests/test_summarizers/test_sum_basic.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import pytest
  from sumy.models.dom._sentence import Sentence
  from sumy.nlp.tokenizers import Tokenizer
  from sumy.summarizers.sum_basic import SumBasicSummarizer
  from sumy.nlp.stemmers import Stemmer
  from ..utils import build_document
label_desc: Use image node_id 9 for calling a global function with example usage: test_get_all_content_words_in_doc() without return types