docstr: Tests whether vectors are initialized with the correct size.
code: def test_vector_shape(self):
      """Tests whether vectors are initialized with the correct size."""
      model = PoincareModel(self.data, size=20)
      self.assertEqual(model.kv.vectors.shape, (7, 20))
  
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 12 for calling the TestPoincareModel obj's underlying member method code with example usage: obj.test_vector_shape() without return types