code: def test_predict_labels(self):
      res = self.tagger.predict(self.sent)
      self.assertEqual(len(res), len(self.sent.split()))
      self.assertIsInstance(res, list)
      for tag in res:
          self.assertIsInstance(tag, str)
  
file_path: anago/tests/test_tagger.py
imports: import os
  import unittest
  import numpy
  import tensorflow
  import anago
  from anago.models import load_model
  from anago.preprocessing import IndexTransformer
label_desc: Use image node_id 4 for calling the TestTagger obj's underlying member method code with example usage: obj.test_predict_labels() without return types