(OpenIdUserManager)newObjectInstance(managerParam);
manager.init(properties);
// openid user cache
String userCacheParam = properties.getProperty("openid.user.cache");
UserCache userCache = userCacheParam==null ? new IdentifierSelectUserCache() :
(UserCache)newObjectInstance(userCacheParam);
// openid automatic redirect
// when the user is redirected to his provider and he somehow navigates away from his
// provider and returns to your site ... the relying party will do an automatic redirect