Method flatMapSingle

src/main/java/io/reactivex/rxjava3/core/Maybe.java:4086–4092

Returns a Maybe based on applying a specified function to the item emitted by the current Maybe, where that function returns a Single. When this Maybe just completes the resulting Maybe completes as well. <img width="640" height="357" src="https://raw.gith

(@NonNull Function<? super T, ? extends SingleSource<? extends R>> mapper)

     * @since 2.1
     */
    @CheckReturnValue
    @NonNull
    @SchedulerSupport(SchedulerSupport.NONE)
    public final <@NonNull R> Maybe<R> flatMapSingle(@NonNull Function<? super T, ? extends SingleSource<? extends R>> mapper) {
        Objects.requireNonNull(mapper, "mapper is null");
        return RxJavaPlugins.onAssembly(new MaybeFlatMapSingle<>(this, mapper));
    }

    /**
     * Returns a {@link Completable} that completes based on applying a specified function to the item emitted by the