public final void convertFromToken(String event, String param, E eventBus) {
try {
// get current URL and portal
final PortalUrl url = PortalUrl.fromEvent(group, event, param);
final Portal view = url.view();
// prepare layout
eventBus.newPortal(view, layout.make(view, eventBus));
// dispatch current URL
convertFromUrl(url, url.view(), eventBus);
} catch (PortalNotFoundException pnfe) {
eventBus.portalNotFound(pnfe);