NHibernateHttpModule.cs depois do resharper

NHibernateHttpModule.cs

using System;
using System.Web;
using NHibernate;
using NHibernate.Cfg;

namespace workshop_httpmodule
{
    public class NHibernateHttpModule : IHttpModule
    {
        public static readonly string NHibernateSessionKey = "NHibernateSession";
        private static ISession _session;
        private static ISessionFactory _factory;

        public void Init(HttpApplication context)
        {
// ReSharper disable RedundantDelegateCreation
            context.BeginRequest += new EventHandler(context_BeginRequest);
// ReSharper restore RedundantDelegateCreation
// ReSharper disable RedundantDelegateCreation
            context.EndRequest += new EventHandler(context_EndRequest);
// ReSharper restore RedundantDelegateCreation
        }

        public void Dispose()
        {
        }

        public static ISession RecuperarSessao
        {
            get
            {
                if (HttpContext.Current == null)
                {
                    if (_session != null)
                    {
                        return _session;
                    }
                    
                    _session = AbrirSessao();
                    return _session;
                }
                
                HttpContext currentContext = HttpContext.Current;
                var session = currentContext.Items[NHibernateSessionKey] as ISession;
                if (session == null)
                {
                    session = AbrirSessao();
                    currentContext.Items[NHibernateSessionKey] = session;
                }
                return session;
            }
        }

        private void context_BeginRequest(object sender, EventArgs e)
        {
            var application = (HttpApplication)sender;
            HttpContext context = application.Context;
            context.Items[NHibernateSessionKey] = AbrirSessao();
        }

        private void context_EndRequest(object sender, EventArgs e)
        {
            var application = (HttpApplication)sender;
            HttpContext context = application.Context;

            var session = context.Items[NHibernateSessionKey] as ISession;
            if (session != null)
            {
                session.Flush();
                session.Close();
            }

            context.Items[NHibernateSessionKey] = null;
        }

        private static ISession AbrirSessao()
        {
            ISession session = GetFactory().OpenSession();

            if (session == null)
                throw new InvalidOperationException("OpenSession() is null.");

            return session;
        }

        private static ISessionFactory GetFactory()
        {
            if (_factory == null)
            {
                var config = new Configuration();

                config.Configure();
                _factory = config.BuildSessionFactory();

                if (_factory == null)
                    throw new InvalidOperationException("BuildSessionFactory is null.");
            }

            return _factory;

        }
    }
}