/// \param theDoc a document where objects were deleted
/// \param theGroup a name of group where objects were deleted
virtual QTreeNodesList objectsDeleted(const DocumentPtr& theDoc, const QString& theGroup);
/// \param theDoc a document where objects were deleted
/// \param theGroup a name of group where objects were deleted
virtual QTreeNodesList objectsDeleted(const DocumentPtr& theDoc, const QString& theGroup);