@ConstantFunction(name = "multiply", argTypes = {BIGINT, BIGINT}, returnType = BIGINT)
    public static ConstantOperator multiplyBigInt(ConstantOperator first, ConstantOperator second) {
        return ConstantOperator.createBigint(Math.multiplyExact(first.getBigint(), second.getBigint()));
    }
@Test
    public void multiplyBigInt() {
        assertEquals(10000,
                ScalarOperatorFunctions.multiplyBigInt(O_BI_100, O_BI_100).getBigint());
    }