code: def setUp(self):
      self.dictionary = common_dictionary
      self.corpus = common_corpus
      self.num_topics = 5
      self.n_ann_terms = 10
      self.model = LdaModel(
          corpus=self.corpus,
          id2word=self.dictionary,
          num_topics=self.num_topics,
          passes=10,
      )
  
file_path: gensim/gensim/test/test_tmdiff.py
imports: import logging
  import unittest
  import numpy
  from gensim.models import LdaModel
  from gensim.test.utils import common_dictionary, common_corpus
label_desc: Use image node_id 1 for calling the TestLdaDiff obj's underlying member method code with example usage: obj.setUp() without return types