docstr: A reusable pipeline with the NER module
code: def pipeline(self):
      """
      A reusable pipeline with the NER module
      """
      return stanza.Pipeline(
          dir=TEST_MODELS_DIR, processors="tokenize,sentiment"
      )
  
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 1 for calling the TestSentimentPipeline obj's underlying member method code with example usage: obj.pipeline() and returns: stanza