code: def test_strictly_lower_inner_product(
      self, tangent_vec_a, tangent_vec_b, expected, atol
  ):
      res = self.space.metric.strictly_lower_inner_product(
          tangent_vec_a,
          tangent_vec_b,
      )
      self.assertAllClose(res, expected, atol=atol)
  
imports: from geomstats.test_cases.geometry.riemannian_metric import RiemannianMetricTestCase
label_desc: Use image node_id 2 for calling the CholeskyMetricTestCase obj's underlying member method code with example usage: obj.test_strictly_lower_inner_product(tangent_vec_a, tangent_vec_b, expected, atol) without return types