Factory Translations for Arrays

[geoffreywiseman]

If you're translating an array, you might want some control over the destination type -- you might, for instance, have parallel hierarchies in a server and client, and store values from various subclasses in an array, and need to translate items from one server-side subclass to a corresponding client-side subclass.

[geoffreywiseman]

At the moment, there's very little control over the translation of arrays -- Arrays don't even currently have a special annotation -- they simply use @Property, which makes it much harder to add an annotation for factory translation of items, because that wouldn't make sense for a non-array property. I think, basically, that this belongs alongside #77, along with, say, orphan removal and matchers, both of which might make sense in an array.