public Link getByUuid(String uuid, String language) throws SiteException {
Assert.notNull("uuid", uuid);
Assert.notNull("language", language);
String key = getKey(uuid, language);
if (!getUuidLanguage2Link().containsKey(key)) {
throw new SiteException("No link for [" + key + "]");
}
return (Link) getUuidLanguage2Link().get(key);
}