But it was referencing NHibernate 3.x.
So, I had to do some small changes to make it work with version 4.0
The modified code is here.
To use it, just compile the library, and reference the assembly : NHibernate.Linq.InnerJoinFetch.dll in your code
and before you start your NHibernate session, or any NHibernate initialization, run this code:
And then you can call any of these: