Trying to forward unwrapped opDispatch names to alias this

[Alex]

On Monday, 19 February 2018 at 08:28:22 UTC, aliak wrote:
> On Monday, 19 February 2018 at 01:00:23 UTC, Adam D. Ruppe 
> wrote:
>> On Monday, 19 February 2018 at 00:42:05 UTC, aliak wrote:
>>> struct B(T) {
>>>     T t;
>>>     A a;
>>>     alias a this;
>>>     auto opDispatch(string name)() if (hasMember!(T, name)) {
>>>         return mixin("t." ~ name);
>>
>> Did you perhaps mean `A` instead of `T` here? cuz in your code 
>> T is int, not the struct.
>
> I don't think I did :p
>
> T is the wrapped type. So if T has a member (in the example 
> it's the built in field "max") then forward that. If member not 
> there then I figured the alias this would be used. I.e. in the 
> example b.p should call A.p.
>
> I assume this should work because rules for alias this (as I 
> understand) are to basically try if there's a member name that 
> resolves the call, else forward to alias this.

There is a related ticket,
https://issues.dlang.org/show_bug.cgi?id=6434
However, not exactly facing this question.

It seems, that currently opDispatch replaces alias this... (?)
Nevertheless, not only T is the wrapped type, but also A with the 
alias.
What to do, if both members have a property with the same name? 
And why?