+ /**
+ * Returns the albums of this Sone.
+ *
+ * @return The albums of this Sone
+ */
+ public List<Album> getAlbums() {
+ return Collections.unmodifiableList(albums);
+ }
+
+ /**
+ * Adds an album to this Sone.
+ *
+ * @param album
+ * The album to add
+ */
+ public synchronized void addAlbum(Album album) {
+ Validation.begin().isNotNull("Album", album).check().isEqual("Album Owner", album.getSone(), this).check();
+ albums.add(album);
+ }
+
+ /**
+ * Removes an album from this Sone.
+ *
+ * @param album
+ * The album to remove
+ */
+ public synchronized void removeAlbum(Album album) {
+ Validation.begin().isNotNull("Album", album).check().isEqual("Album Owner", album.getSone(), this).check();
+ albums.remove(album);
+ }
+