code: def belongs_test_data(self):
      data = [
          dict(
              point=gs.stack([gs.eye(3) + 1.0, gs.eye(3)])[None],
              expected=gs.array(False),
          ),
          dict(
              point=gs.array([gs.eye(3), gs.eye(3)]),
              expected=gs.array(True),
          ),
      ]
      return self.generate_tests(data)
  
file_path: geomstats/tests/tests_geomstats/test_geometry/data/nfold_manifold.py
imports: import geomstats.backend
  from geomstats.test.data import TestData
  from .manifold import ManifoldTestData
  from .mixins import ProjectionMixinsTestData
  from .riemannian_metric import RiemannianMetricTestData
label_desc: Use image node_id 1 for calling the NFoldManifoldSOTestData obj's underlying member method code with example usage: obj.belongs_test_data() and returns: self