+ bool setMarkerLine(BufferId buffer, const MsgId &msgId);
+
+protected:
+ inline QList<BufferId> lastSeenBufferIds() const { return _lastSeenMsg.keys(); }
+ inline QList<BufferId> markerLineBufferIds() const { return _markerLines.keys(); }
+ inline QHash<BufferId, MsgId> markerLines() const { return _markerLines; }