public static <V> Action1<TaskContext<V>> fixedWait(long sleepTime, TimeUnit timeUnit) {
        return ctx -> ThreadUtils.sleep(sleepTime, timeUnit);
    }
public static < V > Action1 < TaskContext < V > > fixedWait ( long sleepTime , TimeUnit timeUnit ) { return ctx -> ThreadUtils . sleep ( sleepTime , timeUnit ) ; }
The fixed sleep time.

@param sleepTime The sleep time.
@param timeUnit  The time unit.
@param <V>       The return value type.
@return The wait strategy action.