code: protected void renderDataCellContents(AbstractRenderAppender appender, String jspFragmentOutput) {
          /* render any JavaScript needed to support framework features */
          if (_spanState.id != null) {
              HttpServletRequest request = JspUtil.getRequest(getJspContext());
              String script = renderNameAndId(request, _spanState, null);
              if(script != null)
                  _spanCellModel.setJavascript(script);
          }
  
          DECORATOR.decorate(getJspContext(), appender, _spanCellModel);
      }
docs: Render the cell's contents.  This method implements support for executing the span cell's decorator.
  @param appender the {@link AbstractRenderAppender} used to collect the rendered output
  @param jspFragmentOutput the String result of having evaluated the span cell's {@link javax.servlet.jsp.tagext.JspFragment}