I'm upgrading my NHibernate references to the new Alpha build and have to change a bunch of using declarations from NHibernate.Expressions to NHibernate.Criterion.
A simple way to have Resharper do this for you is to declare you own NHibernate.Expression namespace and rename it.
Resharper will then find anywhere you declared a using for it and update it. When you are done just remove your namespace declaration.
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