Tapestry, Page Object State and Clustering

[aidan.ohagan]

Hi there,
Ive checked the archive and havent been able to find anything that
answers this so here goes...
Im just discovering T5 and have a query regarding the T5 page object and
how it maintains state (without using the session) from render ->
through the user interacting with the browser -> to submit.  I cant see
how its doing this in a manner which I can ignore when considering
clustering..

Example of what I mean
public class ManageDataRoles extends AbstractAuthenticatedPage
{
        //Note this isnt persisted or added to session
        private ArrayList<DataRole> roles;
        <SNIP>  
        void onSuccess()
        {
                System.out.println("MANAGEDR"+roles.size());
        }
}

So when I render the page the size is 3.
When I submit the page and reference "roles" the size is 3.
Where is this "roles" object being persisted while im happily messing
around with the rendered page in firefox?
Hopefully this makes sense.
Aidan