private OpenIdRelyingPartyApi rpApi;
@Dialogued
public void login(String identifier, boolean fetchEmail, HttpServletResponse response) {
if (fetchEmail) {
OpenIdRequestedAttribute requestedAttribute = rpApi.createOpenIdRequestedAttribute("email", "http://axschema.org/contact/email", true, 1);
List<OpenIdRequestedAttribute> requestedAttributes = new ArrayList<OpenIdRequestedAttribute>();
requestedAttributes.add(requestedAttribute);
rpApi.login(identifier, requestedAttributes, response);
} else {
rpApi.login(identifier, null, response);