code: def test_get_doc_get_feats(self):
      expected = Counter({"a b": 2, "c e f": 1, "b": 1})
  
      actual = FeatsFromTopicModel(
          topic_model={
              "Topic A": ["A b", "b", "C e F"],
              "Topic B": ["B", "C e F"],
          },
      ).get_feats("A b A b C e F B")
  
      self.assertEqual(expected, actual)
  
imports: from collections import Counter
  from unittest import TestCase
  from scattertext.features.FeatsFromTopicModel import FeatsFromTopicModel
label_desc: Use image node_id 1 for calling the TestFeatsFromTopicModel obj's underlying member method code with example usage: obj.test_get_doc_get_feats() without return types