Example unittests?

[Andrej Mitrovic]

On Monday, 17 October 2022 at 12:55:02 UTC, Adam D Ruppe wrote:
> The doc comment gives you a place to write an explanation 
> too... even if you had a @ddoc uda you'd probably still want 
> the /// explanation text. So the uda doesn't gain much.

Technically that could still work, for example:

```d
struct ddoc(alias symbol, string comment) { ... }

@ddoc!(Queue, "Simple example")
unittest {
     ...
}
```

But that's probably ugly. And comments and strings are typically 
highlighted in different shades of colors in editors..