virtual [TOnlineAsyncOpHandle](API\Plugins\OnlineServicesInterface\Online\TOnlineAsyncOpHandle)< [FModifyLobbyAttributes](API\Plugins\OnlineServicesInterface\Online\FModifyLobbyAttributes) > ModifyLobbyAttributes ( [FModifyLobbyAttributes::Params](API\Plugins\OnlineServicesInterface\Online\FModifyLobbyAttributes\Params) && Params )