long age = Navigation.getConfig().getIndexPageCacheLifetime();
if (age == 0) {
DispatcherHelper.cacheDisable(response);
} else {
DispatcherHelper.cacheForWorld(response, (int)age);
}
((com.arsdigita.portalworkspace.ui.WorkspaceViewer) portalWorkspace).setWorkspaceModel(new CategoryPortalSelectionModel());