title: RxSwift and Moya synchronous request
body: <p>Right now i'm having a situation where i'm starting several request from separated threads, something like a Thread Pool.</p>
  
  <p>I want to make that requests to be synchronous, so they will be started and ended on exactly the same thread, not the Main thread.</p>
  
  <p>I tried to set the <code>.observeOn(CurrentThreadScheduler.instance)</code>, but as the response handler thread was always Main thread instead of a current.</p>
  
  <p>Is it possible to specify the current thread as a handler thread for the response?</p>