Method subscribeOn

src/main/java/io/reactivex/rxjava3/core/Maybe.java:5414–5420

Asynchronously subscribes subscribers to this Maybe on the specified Scheduler. Scheduler: you specify which {@code Schedule

(@NonNull Scheduler scheduler)

     * @see #observeOn
     */
    @CheckReturnValue
    @NonNull
    @SchedulerSupport(SchedulerSupport.CUSTOM)
    public final Maybe<T> subscribeOn(@NonNull Scheduler scheduler) {
        Objects.requireNonNull(scheduler, "scheduler is null");
        return RxJavaPlugins.onAssembly(new MaybeSubscribeOn<>(this, scheduler));
    }

    /**
     * Subscribes a given {@link MaybeObserver} (subclass) to this {@code Maybe} and returns the given