how to connect Nhibernate in asp.net web api

http://piotrwalat.net/nhibernate-session-management-in-asp-net-web-api/ http://jasonwatmore.com/post/2015/01/28/unit-of-work-repository-pattern-in-mvc5-and-web-api-2-with-fluent-nhibernate-and-ninject http://stackoverflow.com/questions/39387061/nhibernate-session-management-in-web-api-and-owinmiddleware http://stackoverflow.com/questions/28804483/nhibernate-session-management-in-web-api