///usr/bin/env jbang "$0" "$@" ; exit $?

//JAVA 25+

import java.util.*;

import java.util.stream.*;

/// Proof: stream-mapmulti

/// Source: content/streams/stream-mapmulti.yaml

record Order(String id, List<String> items) {}

record OrderItem(String orderId, String item) {}

void main() {

var orders = List.of(

new Order("o1", List.of("a", "b")),

new Order("o2", List.of("c"))

);

Stream<Order> stream = orders.stream();

stream.<OrderItem>mapMulti(

(order, downstream) -> {

for (var item : order.items())

downstream.accept(

new OrderItem(order.id(), item));

}

).toList();

}