Where can i find examples of multi-threaded fibers?

[Gary Willoughby via Digitalmars-d-learn]

On Monday, 27 July 2015 at 08:00:10 UTC, Marc Schütz wrote:
> On Sunday, 26 July 2015 at 18:07:51 UTC, Gary Willoughby wrote:
>> In the description for Fiber in std.thread is the following[1]:
>>
>> "Please note that there is no requirement that a fiber be 
>> bound to one specific thread. Rather, fibers may be freely 
>> passed between threads so long as they are not currently 
>> executing."
>>
>> How would this be accomplished and are there any code examples 
>> available to learn from? I'm assuming this would require a 
>> custom scheduler similar to the one in std.concurrency?[2]
>>
>> [1]: http://dlang.org/phobos/core_thread.html#.Fiber
>> [2]: 
>> http://dlang.org/phobos/std_concurrency.html#.FiberScheduler
>
> There was a long discussion about this a few weeks ago, and 
> IIRC the outcome was that we shouldn't allow it, because it 
> breaks the type system.

Where is the discussion?