void QHttpSocketEngine::emitPendingReadNotification()
{
    Q_D(QHttpSocketEngine);
    d->readNotificationPending = false;
    if (d->readNotificationEnabled)
        emit readNotification();
}
int AbstractSerialEngine::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
{
    _id = QObject::qt_metacall(_c, _id, _a);
    if (_id < 0)
        return _id;
    if (_c == QMetaObject::InvokeMetaMethod) {
        switch (_id) {
        case 0: readNotification(); break;
        case 1: writeNotification(); break;
        case 2: exceptionNotification(); break;
        case 3: lineNotification(); break;
        default: ;
        }
        _id -= 4;
    }
    return _id;
}