Adding syntacti sugar for simple "readonly" attribute ?

[LunaticWare]

Hello everyone i am new to the D community and i really enjoy 
programming in D,
i haven't done anything significant so far. but being a very lazy 
person,
when writing a bit of code i noticed that maybe for such a simple
thing we could have a shorter syntax.
i don't know if this is the correct way to suggest enhancement to 
D,
and i am sorry if this is already in the language.
so maybe we could add syntactic sugar for "readonly" attributes.
here is simple example, where the following code

---

class Foo
{
     @readonly int bar = 12; // or maybe "@directread" ?

     this(string baz)
     {
         this.bar = baz;
     }
}

---

would be the same as

---

class Foo
{
     private string bar_;

     this(string baz)
     {
         this.bar_ = baz;
     }

     @property string bar()
     {
         return this.bar_;
     }
}