Cannot access template name from within template

[Andrej Mitrovic via Digitalmars-d]

On Tuesday, 4 October 2016 at 22:43:21 UTC, Andrei Alexandrescu 
wrote:
> On 10/04/2016 06:03 PM, Andrej Mitrovic wrote:
>> template TemplateOf(T)
>
> Have you forgotten you submitted this to phobos? :o) -- Andrei

I forgot about that template. But that wasn't me: 
https://github.com/dlang/phobos/pull/1884 :)

I added isInstanceOf 
https://github.com/dlang/phobos/commit/e02593090a909948183921f6f00039ce3f37acff