public void init() throws ServletException {
super.init();
// Register renderer servlets
setupServlet(rendererMap, HtmlRendererServlet.EXT_HTML,
new HtmlRendererServlet());
setupServlet(rendererMap, PlainTextRendererServlet.EXT_TXT,
new PlainTextRendererServlet());
setupServlet(rendererMap, JsonRendererServlet.EXT_JSON,
new JsonRendererServlet());
setupServlet(rendererMap, StreamRendererServlet.EXT_RES,