code: def inverse_transform_tangent_vec(
      self, other_tangent_vec, other_base_point
  ):
      return self.space.half_space_to_ball_tangent(
          other_tangent_vec,
          other_base_point,
      )
  
imports: import pytest
  import geomstats.backend
  from geomstats.geometry.hyperbolic import Hyperbolic
  from geomstats.test.test_case import TestCase
  from geomstats.test.utils import PointTransformer
  from geomstats.test.vectorization import generate_vectorization_data
  from geomstats.test_cases.geometry.riemannian_metric import RiemannianMetricTestCase
label_desc: Use image node_id 2 for calling the BallToHalfSpace obj's underlying member method code with example usage: obj.inverse_transform_tangent_vec(other_tangent_vec, other_base_point) and returns: self