code: def test_multiple_sentences(self, pipeline):
      doc = pipeline(EN_DOC)
      assert len(doc.sentences) == 3
      results = [sentence.sentiment for sentence in doc.sentences]
      assert EXPECTED == results
  
file_path: stanza/stanza/tests/pipeline/test_pipeline_sentiment_processor.py
imports: import pytest
  import stanza
  from stanza.utils.conll import CoNLL
  from stanza.models.common.doc import Document
  from stanza.tests import *
label_desc: Use image node_id 3 for calling the TestSentimentPipeline obj's underlying member method code with example usage: obj.test_multiple_sentences(pipeline) without return types