This needs to be fixed

[Max Samukha]

On Wednesday, 28 August 2024 at 16:37:12 UTC, Max Samukha wrote:
>         ref Outer outer() => *cast(Outer*)(cast(void*)&this - 
> field.offsetof);

Looks like the name can be mixed-in directly:

```
ref Outer outer() => *cast(Outer*)(cast(void*)&this - 
mixin(name).offsetof);
```