How subclassing QAbstractTableModel in qt

FooTableModel.h

class FooTableModel : public QAbstractTableModel {
    Q_OBJECT
   public:
    FooTableModel(QObject *parent = nullptr);
    // readonly tables
    Qt::ItemFlags flags(const QModelIndex &index)
        const override;  // editable can return: Qt::ItemIsEditable
    QVariant data(const QModelIndex &index,
                  int role = Qt::DisplayRole) const override;
    QVariant headerData(int section, Qt::Orientation orientation,
                        int role = Qt::DisplayRole) const override;
    int rowCount(const QModelIndex &parent = QModelIndex()) const override;
    int columnCount(const QModelIndex &parent = QModelIndex()) const override;
    QHash<int, QByteArray> roleNames() const override;

    // editable model have methods(we dont need them now , and even later):
    bool setData(const QModelIndex &index, const QVariant &value,
                 int role = Qt::EditRole) override;
    bool setHeaderData(int section, Qt::Orientation orientation,
                       const QVariant &value, int role = Qt::EditRole) override;
    // resizeAble model have methods:
    bool insertRows(int row, int count,
                    const QModelIndex &parent = QModelIndex()) override;
    bool removeRows(int row, int count,
                    const QModelIndex &parent = QModelIndex()) override;
    bool insertColumns(int column, int count,
                       const QModelIndex &parent = QModelIndex()) override;
    bool removeColumns(int column, int count,
                       const QModelIndex &parent = QModelIndex()) override;

   private:
};