code: public static <T> Mono<T> first(Iterable<? extends Mono<? extends T>> monos) {
  		return onAssembly(new MonoFirst<>(monos));
  	}
docs: Pick the first available result coming from any of the given monos and populate a new {@literal Mono}.
  
  <p>
  <img class="marble" src="doc-files/marbles/firstForMono.svg" alt="">
  <p>
  @param monos The monos to use.
  @param <T> The type of the function result.
  
  @return a {@link Mono}.