code: def metric_matrix_test_data(self):
      data = [
          dict(base_point=None, expected=gs.eye(2)),
      ]
      return self.generate_tests(data)
  
file_path: geomstats/tests/tests_geomstats/test_geometry/data/hermitian.py
imports: import geomstats.backend
  from geomstats.test.data import TestData
  from .base import ComplexVectorSpaceTestData
  from .complex_riemannian_metric import ComplexRiemannianMetricTestData
  from .mixins import GroupExpMixinsTestData
label_desc: Use image node_id 3 for calling the Hermitian2MetricTestData obj's underlying member method code with example usage: obj.metric_matrix_test_data() and returns: self