[TFuture](API\Runtime\Core\Async\TFuture)< [TDefaultErrorResult](API\Plugins\OnlineServicesCommon\Online\TDefaultErrorResult)< [FLobbiesLeaveLobbyImpl](API\Plugins\OnlineServicesEOSGS\Online\FLobbiesLeaveLobbyImpl) > > LeaveLobbyImpl ( [FLobbiesLeaveLobbyImpl::Params](API\Plugins\OnlineServicesEOSGS\Online\FLobbiesLeaveLobbyImpl\Params) && Params )