code: def test_baker_campbell_hausdorff_vec(self, n_reps, atol, order=2):
      matrix_a, matrix_b = self.data_generator.random_point(2)
      expected = self.space.baker_campbell_hausdorff(
          matrix_a, matrix_b, order=order
      )
  
      vec_data = generate_vectorization_data(
          data=[
              dict(
                  matrix_a=matrix_a,
                  matrix_b=matrix_b,
                  expected=expected,
                  atol=atol,
                  order=order,
              )
          ],
          arg_names=["matrix_a", "matrix_b"],
          expected_name="expected",
          n_reps=n_reps,
      )
      self._test_vectorization(vec_data)
  
imports: import pytest
  from geomstats.test.vectorization import generate_vectorization_data
  from geomstats.test_cases.geometry.base import MatrixVectorSpaceTestCase
label_desc: Use image node_id 2 for calling the MatrixLieAlgebraTestCase obj's underlying member method code with example usage: obj.test_baker_campbell_hausdorff_vec(n_reps, atol, order) without return types