// Session LCO
public class Session extends Application
{
    public CachedObject getContacts()
    {
        CachedObject obj = (CachedObject)get("contacts");

        if (obj == null)
        {
            obj = new CachedObject();
            obj.setId("contacts");

            put("contacts", obj);
        }
    
        return obj;
    }
    
    public void sendAlert(String pMessage)
    {
        Mail.send("noreply@sibvisions.com", "alert@customer.com", 
                   null, "Alert from EG", pMessage);
    }
}

// A Screen LCO
public class Students extends Session
{
}