docstr: Tests whether vectors have the correct dtype before and after training.
code: def test_vector_dtype(self):
      """Tests whether vectors have the correct dtype before and after training."""
      model = PoincareModel(
          self.data_large, dtype=np.float32, burn_in=0, negative=3
      )
      self.assertEqual(model.kv.vectors.dtype, np.float32)
      model.train(epochs=1)
      self.assertEqual(model.kv.vectors.dtype, np.float32)
  
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 13 for calling the TestPoincareModel obj's underlying member method code with example usage: obj.test_vector_dtype() without return types