QVariantList requestBacklogFiltered(BufferId bufferId, MsgId first = -1, MsgId last = -1, int limit = -1,
int additional = 0, int type = -1, int flags = -1) override;
QVariantList requestBacklogFiltered(BufferId bufferId, MsgId first = -1, MsgId last = -1, int limit = -1,
int additional = 0, int type = -1, int flags = -1) override;