mutiny.java

//usr/bin/env jbang "$0" "$@" ; exit $?
//DEPS io.smallrye.reactive:mutiny:0.5.3

public class mutiny {

    public static void main(String... args) {
        io.smallrye.mutiny.Multi.createFrom().items("hello", "world")
        .onItem().apply(s->s.toUpperCase() + " ")
        .onCompletion().continueWith("!")
        .subscribe().with(System.out::print);
    }
}