@property for simple methods?

[Vladimirs Nordholm via Digitalmars-d-learn]

Heyo.

I have a struct with a couple "property" methods, like:
    struct A
    {
        auto foo(int bar) { /* do something */ }
    }

Is there any reason for me to add the @property tags for the 
method? The following code compiles just fine with the struct 
above

    A a = A();
    a.foo = 42; // no @property tag for `foo(int bar);` yet works

Best regards,
Vladimirs Nordholm