def METHOD_NAME(permute):
    f = io.StringIO(
        TOALineOrderSetup.preamble
        + "".join([str(x) for x in TOALineOrderSetup.datalines[permute]])
    )
    t = toa.get_TOAs(f)
    clkcorr = t.get_flag_value("clkcorr", 0, np.float64)[0] * u.s
    assert (clkcorr == TOALineOrderSetup.clkcorr[permute]).all()