code: def matrix_representation_vec_test_data(self):
      return self.generate_vec_data()
  
imports: from .complex_manifold import ComplexManifoldTestData
  from .manifold import ManifoldTestData
  from .mixins import ProjectionMixinsTestData
label_desc: Use image node_id 3 for calling the MatrixVectorSpaceTestData obj's underlying member method code with example usage: obj.matrix_representation_vec_test_data() and returns: self