code: public void doProcess(HttpServletRequest req, HttpServletResponse res) 
          throws ServletException, IOException
      {
          ServletTask servletTask = new ServletTask(this, BasicServlet.SERVLET_TYPE.HTML);
          try {
              this.addBrowserProperties(req, servletTask);
              servletTask.doProcess(this, req, res, null);
          } catch (ServletException e) {
              throw e;
          } catch (IOException e) {
              throw e;
          } finally {
              servletTask.free();
          }
      }
docs: Process an HTML get or post.
  @exception ServletException From inherited class.
  @exception IOException From inherited class.