code: def setUp(self):
      self.corpus = MmCorpus(datapath("testcorpus.mm"))
      self.model = lsimodel.LsiModel(self.corpus, num_topics=2)
  
imports: import logging
  import unittest
  import numpy
  import scipy.linalg
  from gensim import matutils
  from gensim.corpora.mmcorpus import MmCorpus
  from gensim.models import lsimodel
  from gensim.test import basetmtests
  from gensim.test.utils import datapath, get_tmpfile
label_desc: Use image node_id 1 for calling the TestLsiModel obj's underlying member method code with example usage: obj.setUp() without return types