code: def solve_sylvester_test_data(self):
      smoke_data = [
          dict(
              shape_a=(3, 3),
              shape_b=(1, 1),
              shape_c=(3, 1),
          ),
      ]
  
      return self.generate_tests(smoke_data)
  
imports: import numpy
  import geomstats.backend
  from geomstats.geometry.matrices import Matrices
  from geomstats.geometry.spd_matrices import SPDMatrices
  from geomstats.geometry.symmetric_matrices import SymmetricMatrices
  from geomstats.test.data import TestData
label_desc: Use image node_id 18 for calling the DtypeTestData obj's underlying member method code with example usage: obj.solve_sylvester_test_data() and returns: self