Returns a new CompletableFuture that is asynchronously completed
by a task running in the {@link ForkJoinPool#commonPool()} after
it runs the given action.
@param runnable the action to run before completing the
returned CompletableFuture
@return the new CompletableFuture
Returns a new CompletableFuture that is asynchronously completed by a task running in the {@link ForkJoinPool#commonPool()} after it runs the given action.
@param runnable the action to run before completing the returned CompletableFuture @return the new CompletableFuture