code: def setUp(self):
      self.corpus = mmcorpus.MmCorpus(datapath("testcorpus.mm"))
      self.class_ = ldamodel.LdaModel
      self.model = self.class_(
          corpus, id2word=dictionary, num_topics=2, passes=100
      )
  
imports: import logging
  import numbers
  import os
  import unittest
  import copy
  import numpy
  from numpy.testing import assert_allclose
  from gensim.corpora import mmcorpus, Dictionary
  from gensim.models import ldamodel, ldamulticore
  from gensim import matutils, utils
  from gensim.test import basetmtests
  from gensim.test.utils import datapath, get_tmpfile, common_texts
label_desc: Use image node_id 1 for calling the TestLdaModel obj's underlying member method code with example usage: obj.setUp() without return types