void SetActivityPriority ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & LocalUserId, const [TMap](API\Runtime\Core\Containers\TMap)< [FString](API\Runtime\Core\Containers\FString), int32 > & PrioritizedActivities, [FOnSetActivityPriorityComplete](API\Plugins\OnlineSubsystem\Interfaces\FOnSetActivityPriorityComplete) CompletionDelegate )