Index: sources/model/MListModel.h
===================================================================
diff -u -raacca8cc53f5e4ff5abb6d7df3d5ad48c915645c -r5941bc1d07e5d58f9d848afbf1414ef4f78e9185
--- sources/model/MListModel.h	(.../MListModel.h)	(revision aacca8cc53f5e4ff5abb6d7df3d5ad48c915645c)
+++ sources/model/MListModel.h	(.../MListModel.h)	(revision 5941bc1d07e5d58f9d848afbf1414ef4f78e9185)
@@ -30,6 +30,7 @@
     void                    insertRow   (const int vRow, const QHash<int, QVariant> &vData                          );
     void                    updateData  (const int vRow, const int vRole, const QVariant& vValue                    );
     MListModel              &operator = (const QList<QHash<int, QVariant>> &src                                     );
+    QStringList             getAllRoles (int vRole                                                                  ) const;
 
 public slots:
     QVariantMap             get         (int vRow                                                                   ) const;  // Exposed to QML