worker reference processor, with the intention of accessing a thread's c...

...urrent Celluloid::Actor (to call after)

There is a better way of doing this, such as in [Sidekiq middleware](https://github.com/mperham/sidekiq/wiki/Middleware), so that it is not necessary to change the core sidekiq code. Doing it this way as a proof-of-concept for introducing an asynchronous delay.