QDataStream &operator<<(QDataStream &out, const TransferManager::TransferIdList &transferIds);
QDataStream &operator>>(QDataStream &in, TransferManager::TransferIdList &state);
QDataStream &operator<<(QDataStream &out, const TransferManager::TransferIdList &transferIds);
QDataStream &operator>>(QDataStream &in, TransferManager::TransferIdList &state);