How to define delegate what returns ref?

[Oleg B via Digitalmars-d-learn]

Hello all!

syntax
    ref int delegate() foo0;

or

    ref(int) delegate() foo1;

or

    int delegate() ref foo2;

are not valid.

if I try alias

    alias refint = ref int;
    refint delegate() foo3;

foo3 have type `int delegate()` (without `ref`)
and it can't store delegate from object method that have `int 
delegate() ref` (that can be printed if we use 
`typeof(&someobject.method).stringof`)

I found only one ugly way to do this

    interface Foo { ref int func(); }
    typeof(&Foo.init.func) foo4;

How to do this more clearly?