- virtual bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const;
- virtual bool lessThan(const QModelIndex &source_left, const QModelIndex &source_right) const;
+ bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const override;
+ bool lessThan(const QModelIndex &source_left, const QModelIndex &source_right) const override;