Add support for <idbag />

[Trinition]

In NHibernate manual Chapter 6, section 7 ("6.7 using an "), it describes using an "idbag" as a composite collection of components with an ID. In a Stackoverflow answer from a few years ago, a user suggested that Fluent NHibernate doesn't have a fluent mapping of idbag. I did a brief search just now and found nothing new.

Hence, I'm opening this issue.

[LeonLeonNight]

I'm find some information about this theme, but and here say, that fluent don't work with idbag. https://notherdev.blogspot.com/2012/02/mapping-by-code-list-array-idbag.html