typedef [TUniqueFunction](API\Runtime\Core\Templates\TUniqueFunction)< [TOptional](API\Runtime\Core\IO\TOptional)< [FOnlineError](API\Plugins\OnlineServicesInterface\Online\FOnlineError) >(const [FOnlineError](API\Plugins\OnlineServicesInterface\Online\FOnlineError) &, const [FOnlineErrorOss](API\Plugins\OnlineServicesOSSAdapter\Online\FOnlineErrorOss) &)> TOssPlatformErrorHandler