Model model = (Model) req.getService(Model.ROLE, modelName);
ModelRequest mreq = (ModelRequest) req.getService(ModelRequest.ROLE, "default");
mreq.copyFrom(req);
mreq.removeParameter("listSearch");
for (Iterator i = req.getParameters().keySet().iterator(); i.hasNext();)
{
String key = (String) i.next();