*/
public OpenIDExtension getExtension(String alias, AuthSuccess auth) {
if (alias.equals(AxMessage.OPENID_NS_AX)
|| alias.equals(IdentityConstants.OpenId.ExchangeAttributes.NS_AX)) {
return new OpenIDAttributeExchange(auth);
} else if (alias.equals(IdentityConstants.OpenId.SimpleRegAttributes.NS_SREG)
|| alias.equals(SRegMessage.OPENID_NS_SREG)
|| alias.equals(IdentityConstants.OpenId.SimpleRegAttributes.NS_SREG_1)) {
return new OpenIDSimpleReg(auth);
} else if (alias.equals(PapeMessage.OPENID_NS_PAPE)) {