Null id's on inner objects

[eduardofcgo]

Hello,
I'm starting now using the plugin, and I have now noticed that by default, nested objects get null id fields when indexing.
Using the samples as an example, in the Team object, the nested object Country gets an null id field after the document is indexed, even if the Country instance passed has an id field.
Is there any specific reason for this?
Any help is greatly appreciated.

[eduardofcgo]

Maybe I rushed into creating the issue; from my refreshed understanding, an id is only inherent to a document indexed, not to an object.
Assuming that I am right, it now seems that I need to implement my own id in java if I want to do something like: on updating a country object, update all the teams that have that country as an inner object. Am I right?