#include <QtCore/qabstractfileengine.h>
#ifndef QABSTRACTFILEENGINE_H
class QAbstractFileEngine{
   /* Some contents are skipped to improve readability */
   public: enum FileOwner{
      OwnerUser = 0,
      OwnerGroup = 1,
   };
   /* ... */
};
#endif // QABSTRACTFILEENGINE_H