public int doStartTag(PortalRenderResponse renderResponse) throws JspException
{
initState(renderResponse);
//
WindowResult result = renderResponse.getWindowResult(windowId);
//
if (result == null || result.getResponse() == null)
{
handleError(renderResponse, Constants.NOT_FOUND, null, null);
// We cannot show an absent portlet, no meta data
return SKIP_BODY;