public FEELFnResult<BigDecimal> invoke(@ParameterName( "n" ) BigDecimal n) {
        return invoke(n, BigDecimal.ZERO);
    }
@Test
    void invokeRoundingOdd() {
        FunctionTestUtil.assertResult(roundUpFunction.invoke(BigDecimal.valueOf(10.35)), BigDecimal.valueOf(11));
        FunctionTestUtil.assertResult(roundUpFunction.invoke(BigDecimal.valueOf(10.35), BigDecimal.ONE),
                                      BigDecimal.valueOf(10.4));
    }