(Since version 2.8.0) use scheduler.SingleThreadedScheduler instead
(Since version 2.8.0) use scheduler.ForkJoinScheduler instead
(Since version 2.8.0) this class is going to be removed in a future release
(Since version 2.8.0) use scheduler.ForkJoinScheduler instead
(Since version 2.8.0) use scheduler.ForkJoinScheduler instead