@ConstantFunction(name = "multiply", argTypes = {INT, INT}, returnType = INT)
    public static ConstantOperator multiplyInt(ConstantOperator first, ConstantOperator second) {
        return ConstantOperator.createInt(Math.multiplyExact(first.getInt(), second.getInt()));
    }
@Test
    public void multiplyInt() {
        assertEquals(100,
                ScalarOperatorFunctions.multiplyInt(O_INT_10, O_INT_10).getInt());
    }