#include <QtNetwork/qabstractsocket.h>
#ifndef QABSTRACTSOCKET_H
class QAbstractSocket: public QIODevice{
   /* Some contents are skipped to improve readability */
   protected: QAbstractSocket(enum QAbstractSocket::SocketType socketType, struct QAbstractSocketPrivate& dd, class QObject* parent = 0);
   /* ... */
};
#endif // QABSTRACTSOCKET_H