virtual void OnUnset(User* source, Channel* chan) { }
virtual ModeAction OnSet(User* source, Channel* chan, std::string& param) = 0;
virtual void GetParameter(Channel* chan, std::string& out) = 0;
virtual void OnUnset(User* source, Channel* chan) { }
virtual ModeAction OnSet(User* source, Channel* chan, std::string& param) = 0;
virtual void GetParameter(Channel* chan, std::string& out) = 0;