Question about IModel#flatMap

[Andrea Del Bene]

Hi guys,

I need some help with the new method IModel#flatMap as I don't 
completely get the idea behind it. I've got two main questions:
- Why "flat" in the name? It sounds a little misleading to me. With 
Stream is quite clear what flatMap does: it gets new streams out of each 
element end merge them into an unique stream. But in this case I don't 
understand what "flat" means.
- Looking at the test code I see that the main difference between map 
and flatMap is that the first creates a read-only model, while the 
second uses a wrapping model that might be a read/write one. If so 
wouldn't be better to provide a second map method with a WicketConsumer 
as additional parameter? Example: Model.of(person).map(Person::getName, 
Person::setName);

Cheers.

Andrea.