Is this a bug when creating proxies in classes?

[Gary Willoughby via Digitalmars-d-learn]

On Thursday, 28 August 2014 at 16:23:48 UTC, anonymous wrote:
> On Tuesday, 26 August 2014 at 18:13:52 UTC, Gary Willoughby 
> wrote:
>> With that in mind what is strange is that if in my example you 
>> change the class for a struct everything works as expected. 
>> Why is that?
>
> That's because when not mixed into a class, Proxy did import
> std.traits:
>
>      static if (!is(typeof(this) == class))
>      {
>          private import std.traits;

Ah right, yes. ta.