code: def test_vector_from_upper_triangular_matrix_after_upper_triangular_matrix_from_vector(
      self, n_points, atol
  ):
      vector = self.data_generator.random_point(n_points)
      mat = self.space.upper_triangular_matrix_from_vector(vector)
      vector_ = self.space.vector_from_upper_triangular_matrix(mat)
      self.assertAllClose(vector_, vector, atol=atol)
  
file_path: geomstats/geomstats/test_cases/geometry/heisenberg.py
imports: import pytest
  from geomstats.test.random import HeisenbergVectorsRandomDataGenerator
  from geomstats.test.vectorization import generate_vectorization_data
  from geomstats.test_cases.geometry.base import VectorSpaceTestCase
  from geomstats.test_cases.geometry.lie_group import LieGroupTestCase
label_desc: Use image node_id 5 for calling the HeisenbergVectorsTestCase obj's underlying member method code with example usage: obj.test_vector_from_upper_triangular_matrix_after_upper_triangular_matrix_from_vector(n_points, atol) without return types