def METHOD_NAME():
    # Check that we can replace the mapping completely
    custom_mapping = {
        3: StokesSymbol("A"),
        4: StokesSymbol("B"),
        5: StokesSymbol("C"),
        6: StokesSymbol("D"),
    }
    with custom_stokes_symbol_mapping(custom_mapping, replace=True):
        sk = StokesCoord(np.arange(1, 7))
        assert_equal(sk.symbol, np.array(["?", "?", "A", "B", "C", "D"]))