+ public synchronized Set<String> loadFriends(String localSoneId) {
+ return loadIds("Sone/" + localSoneId + "/Friends");
+ }
+
+ public void saveFriends(String soneId, Collection<String> friends) {
+ saveIds("Sone/" + soneId + "/Friends", friends);
+ }
+
+ public synchronized Set<String> loadKnownSones() {
+ return loadIds("KnownSones");
+ }
+
+ public synchronized void saveKnownSones(Set<String> knownSones) {
+ saveIds("KnownSones", knownSones);
+ }
+