title: NHibernate ICriteria - Does the sort allow for null?
body: <p>Using NHibernate ICriteria and adding .AddOrder ... I want to sort by a property that is sometimes null with all the populated ones at the top. Will .AddOrder allow me to do this? If not is there an alternative? </p>
  
  <p>The sorting options for ILists leave a lot to be desired. </p>