code: def exp_diagonal_is_totally_geodesic_test_data(self):
      data = [
          dict(param=gs.random.rand(1), tangent_param=gs.random.rand(1))
      ]
      return self.generate_tests(data)
  
file_path: geomstats/tests/tests_geomstats/test_information_geometry/data/dirichlet.py
imports: import geomstats.backend
  from geomstats.test.data import TestData
  from ...test_geometry.data.base import VectorSpaceOpenSetTestData
  from ...test_geometry.data.riemannian_metric import RiemannianMetricTestData
  from .base import InformationManifoldMixinTestData
label_desc: Use image node_id 3 for calling the DirichletMetricTestData obj's underlying member method code with example usage: obj.exp_diagonal_is_totally_geodesic_test_data() and returns: self