code: public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException {
          WebAppServletInvocationEvent evt = null;
          if (notifyInvocationListeners) {
              evt = new WebAppServletInvocationEvent(this, getServletContext(), getServletName(), servletConfig.getClassName(), req, res); // 263020
          }
  
          service(req, res, evt);
      }
docs: /*
  (non-Javadoc)
  
  @see javax.servlet.Servlet#service(javax.servlet.ServletRequest,
  javax.servlet.ServletResponse)