Method retryWhen

src/main/java/io/reactivex/rxjava3/core/Maybe.java:5062–5068

Returns a Maybe that emits the same values as the current Maybe with the exception of an onError. An onError notification from the source will result in the emission of a Throwable item to the Flowable provided as an argument to the {@code notification

(
            @NonNull Function<? super Flowable<Throwable>, @NonNull ? extends Publisher<@NonNull ?>> handler)

     * @see <a href="http://reactivex.io/documentation/operators/retry.html">ReactiveX operators documentation: Retry</a>
     */
    @CheckReturnValue
    @SchedulerSupport(SchedulerSupport.NONE)
    @NonNull
    public final Maybe<T> retryWhen(
            @NonNull Function<? super Flowable<Throwable>, @NonNull ? extends Publisher<@NonNull ?>> handler) {
        return toFlowable().retryWhen(handler).singleElement();
    }

    /**
     * Wraps the given {@link MaybeObserver}, catches any {@link RuntimeException}s thrown by its