How to define delegate what returns ref?

[Oleg B]

On Friday, 28 August 2020 at 11:50:35 UTC, kinke wrote:
> On Friday, 28 August 2020 at 11:46:15 UTC, Oleg B wrote:
>> How to do this more clearly?
>
> alias Dg = ref int delegate();
> Dg foo;

Thanks!