#include <QtCore/qabstractitemmodel.h>
#ifndef QABSTRACTITEMMODEL_H
class QAbstractListModel: public QAbstractItemModel{
   /* Some contents are skipped to improve readability */
   protected: QAbstractListModel(struct QAbstractItemModelPrivate& dd, class QObject* parent);
   /* ... */
};
#endif // QABSTRACTITEMMODEL_H