+ /**
+ * Notifies a listener that the given Sone is now marked as known.
+ *
+ * @param sone
+ * The known Sone
+ */
+ public void markSoneKnown(Sone sone);
+
+ /**
+ * Notifies a listener that the given post is now marked as known.
+ *
+ * @param post
+ * The known post
+ */
+ public void markPostKnown(Post post);
+
+ /**
+ * Notifies a listener that the given reply is now marked as known.
+ *
+ * @param reply
+ * The known reply
+ */
+ public void markReplyKnown(Reply reply);
+