def METHOD_NAME():
    matrix = [[[1, -2, 3], [7, 8, 9], [4, 5, 6]], [[-1, 3, -2], [0, 9, -5], [7, 7, -4]]]
    trans = linear_transforms(dims=['lin'], values=matrix, unit='s')
    vec = sc.vector([6.2, 4.21, 3.0], unit='kg')
    assert sc.allclose(trans * inv(trans) * vec, vec)
    assert sc.allclose(inv(trans) * trans * vec, vec)
    assert (trans * inv(trans) * vec).sizes == {'lin': 2}
    assert (inv(trans) * trans * vec).sizes == {'lin': 2}