List services = (List) sExtraServices.get(servletName);
List<DocumentService> services = sExtraServices.get(servletName);
    public static void addService(String servletName, DocumentService service) {        synchronized (sExtraServices) {            ZimbraServlet servlet = ZimbraServlet.getServlet(servletName);            if (servlet != null) {                ((SoapServlet) servlet).addService(service);            } else {                sLog.debug("addService(" + servletName + ", " +                    StringUtil.getSimpleClassName(service) + "): servlet has not been initialized");                List services = (List) sExtraServices.get(servletName);                services.add(service);            }        }    }