title: Nested select not working in NHibernate.Linq
body: <p>I want to load the list of users and their roles, with this query:</p>
  
  <pre><code>var q = from u in session.Linq&lt;User&gt;()
      select new
      {
          u.Name,
          u.Password,                                
          Roles = from r in u.Roles
                  select new { r.Code, r.Name }
      }; 
  </code></pre>
  
  <p>But this query is not working.
  Produce the following error: "The method 'Select' is not implemented."</p>
  
  <p>¿The message suggest that NHibernate.Linq not support nested selects?
  I want to know if this is certain or exist other way to do this?</p>
  
  <p>PD: please excuse my bad english.</p>