code: def grad_log_sigmoid_test_data(self):
      data = [
          dict(
              point=gs.array([0.1, 0.3]),
              expected=gs.array([0.47502081, 0.42555748]),
          )
      ]
      return self.generate_tests(data)
  
file_path: geomstats/tests/tests_geomstats/test_datasets/data/prepare_graph_data.py
imports: import geomstats.backend
  from geomstats.datasets.utils import load_karate_graph
  from geomstats.test.data import TestData
label_desc: Use image node_id 2 for calling the HyperbolicEmbeddingTestData obj's underlying member method code with example usage: obj.grad_log_sigmoid_test_data() and returns: self