schedule
Schedules a Runnable for execution at some point in the future. Tasks will typically be executed on a first-in-first-out manner, but this depends on the Scheduler implementation.
Submitted tasks are cancellable by the returned Disposable instance.
Schedules a Runnable for execution at some point in the future, but delayed by the provided delay. Tasks will not be executed before this delay.
Submitted tasks are cancellable by the returned Disposable instance.