code: public void addGlobalFilter(String name, String classname,
        Map<String, String> parameters) {
      final String[] ALL_URLS = { "/*" };
      defineFilter(webAppContext, name, classname, parameters, ALL_URLS);
      for (Context ctx : defaultContexts.keySet()) {
        defineFilter(ctx, name, classname, parameters, ALL_URLS);
      }
      LOG.info("Added global filter" + name + " (class=" + classname + ")");
    }
docs: {@inheritDoc}