std::vector<Message> requestAllMsgs(UserId user, MsgId first = -1, MsgId last = -1, int limit = -1) override;
std::vector<Message> requestAllMsgsFiltered(UserId user,
MsgId first = -1,
std::vector<Message> requestAllMsgs(UserId user, MsgId first = -1, MsgId last = -1, int limit = -1) override;
std::vector<Message> requestAllMsgsFiltered(UserId user,
MsgId first = -1,