code: def matrix_representation_test_data(self):
      data = [
          dict(
              basis_representation=gs.array([1.0]),
              expected=gs.array([[1.0]]),
          ),
      ]
  
      return self.generate_tests(data)
  
file_path: geomstats/tests/tests_geomstats/test_geometry/data/symmetric_matrices.py
imports: import geomstats.backend
  from geomstats.test.data import TestData
  from .base import MatrixVectorSpaceTestData
label_desc: Use image node_id 3 for calling the SymmetricMatrices1TestData obj's underlying member method code with example usage: obj.matrix_representation_test_data() and returns: self