docstr: Tests whether model from older gensim version is loaded correctly.
code: def test_persistence_old_model(self):
      """Tests whether model from older gensim version is loaded correctly."""
      loaded = PoincareModel.load(datapath("poincare_test_3.4.0"))
      self.assertEqual(loaded.kv.vectors.shape, (239, 2))
      self.assertEqual(len(loaded.kv), 239)
      self.assertEqual(loaded.size, 2)
      self.assertEqual(len(loaded.all_relations), 200)
  
imports: import logging
  import os
  import tempfile
  import unittest
  import numpy
  from gensim.models.poincare import PoincareRelations, PoincareModel, PoincareKeyedVectors
  from gensim.test.utils import datapath
label_desc: Use image node_id 9 for calling the TestPoincareModel obj's underlying member method code with example usage: obj.test_persistence_old_model() without return types