@ConstantFunction(name = "multiply", argTypes = {LARGEINT, LARGEINT}, returnType = LARGEINT)
    public static ConstantOperator multiplyLargeInt(ConstantOperator first, ConstantOperator second) {
        return ConstantOperator.createLargeInt(first.getLargeInt().multiply(second.getLargeInt()));
    }
@Test
    public void multiplyLargeInt() {
        assertEquals("10000",
                ScalarOperatorFunctions.multiplyLargeInt(O_LI_100, O_LI_100).getLargeInt().toString());
    }