### Question:
MultiConvert { public Publisher<T> toPublisher() { return upstream; } MultiConvert(Multi<T> upstream); R with(Function<Multi<T>, R> converter); Publisher<T> toPublisher();  }### Answer:
@Test public void testMultiConvertToPublisher() { Multi<Integer> items = Multi.createFrom().items(1, 2, 3); Publisher<Integer> publisher = items.convert().toPublisher(); assertThat(items).isSameAs(publisher); }