- * Adds an album to this album.
- *
- * @param album
- * The album to add
- */
- void addAlbum(Album album);
-
- /**
- * Removes an album from this album.
- *
- * @param album
- * The album to remove
- */
- void removeAlbum(Album album);
-
- /**
- * Moves the given album up in this album’s albums. If the album is already the
- * first album, nothing happens.
- *
- * @param album
- * The album to move up
- * @return The album that the given album swapped the place with, or
- * <code>null</code> if the album did not change its place
- */
- Album moveAlbumUp(Album album);
-
- /**
- * Moves the given album down in this album’s albums. If the album is already
- * the last album, nothing happens.
- *
- * @param album
- * The album to move down
- * @return The album that the given album swapped the place with, or
- * <code>null</code> if the album did not change its place
- */
- Album moveAlbumDown(Album album);
-
- /**