operator `+`(a, b: int): int {
    #pragma[magic: "AddInt64", pure]
}


fn getAdder(a, b: int): fn: int64 {
    var x = a;
    var y = b;
    fn adder: int {
        return x + y;
    }
    return adder;
}


var a = 5;
var b = 6;
var adder = getAdder(a, b);
adder();