log.log(Level.FINE, "initializing {0}", WarpFilter.class.getSimpleName());
ManagerBuilder builder = ManagerBuilder.from().extension(Class.forName(DEFAULT_EXTENSION_CLASS));
manager = builder.create();
manager.start();
manager.bind(ApplicationScoped.class, Manager.class, manager);
delegator = new RequestDelegator();
} catch (Exception e) {
throw new ServletException("Could not init " + WarpFilter.class.getSimpleName(), e);
}
}