code: def test_transconjugate(self, mat, expected, atol):
      res = self.space.transconjugate(mat)
      self.assertAllClose(res, expected, atol=atol)
  
imports: from geomstats.test_cases.geometry.base import ComplexMatrixVectorSpaceTestCase
label_desc: Use image node_id 1 for calling the ComplexMatricesTestCase obj's underlying member method code with example usage: obj.test_transconjugate(mat, expected, atol) without return types