Iterate Uni<Map> and emit events based on map entries

[M-C-Dev]

Given these classes:

@Data
@AllArgsConstructor
@NoArgsConstructor
@Accessors(fluent = true)
public class Person { 
	private String name;
	private String address; 
}

I've put down an "aggregation snippet" like following:

public class GroupingMultiTest {
	
	public static void main(String[] args) {
		
		Multi<Person> multiPerson = Multi.createFrom()
		.items(new Person("Paul", "Street A"), new Person ("Paul", "Street B"), new Person ("James", "Street C"));
		 
		Uni<Map<String, Collection<Person>>> uni =
				multiPerson.collect()
		                .asMultiMap(item -> getKeyForItem(item));
		 
		uni.subscribe().with(
		        item -> { System.out.println("👍 " + item.size()); printMap(item);},
		         err -> System.err.println(err.getMessage())
		    );
		
	}

	private static void printMap (Map<String, Collection<Person>> map) {
		for (Map.Entry<String, Collection<Person>> entry: map.entrySet()) {
              System.out.println("key: " + entry.getKey() + " - val: " + entry.getValue());
        }
	}
	
	private static String getKeyForItem(Person item) { 
		return item.name();
	}  
}

Which works as expected with following result:

👍 2
key: James - val: [Person(name=James, address=Street C)]
key: Paul - val: [Person(name=Paul, address=Street A), Person(name=Paul, address=Street B)]

Now, my question is: how can I iterate the Map<String, Collection> inside Uni and subsequently for each key, emit a new operation?

thanks in advance