virtual QList<BufferInfo> requestBuffers(UserId user);
virtual QList<BufferId> requestBufferIdsForNetwork(UserId user, NetworkId networkId);
virtual bool removeBuffer(const UserId &user, const BufferId &bufferId);
virtual QList<BufferInfo> requestBuffers(UserId user);
virtual QList<BufferId> requestBufferIdsForNetwork(UserId user, NetworkId networkId);
virtual bool removeBuffer(const UserId &user, const BufferId &bufferId);