fetch.addAttribute("oiNickName", "http://openid.net/schema/namePerson/friendly", true);
fetch.addAttribute("aEmail", "http://axschema.org/contact/email", true);
fetch.addAttribute("oiEmail", "http://schema.openid.net/contact/email", true);
System.out.println("adding extension");
authReq.addExtension(fetch);
// redirect to OpenID for authentication
System.out.println("sending redirect");
response.sendRedirect(authReq.getDestinationUrl(true));
} catch (OpenIDException e) {
System.out.println("oid exception!");