def METHOD_NAME():
    ak_array_in = ak.Array([1.1 + 0.1j, 2.2 + 0.2j, 3.3 + 0.3j, 4.4 + 0.4j, 5.5 + 0.5j])
    data_frame = ak.to_rdataframe({"x": ak_array_in})
    assert data_frame.GetColumnType("x") == "std::complex<double>"
    ak_array_out = ak.from_rdataframe(
        data_frame,
        columns=("x",),
    )
    assert ak_array_in.to_list() == ak_array_out["x"].to_list()