void EndActivity ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & LocalUserId, const [FString](API\Runtime\Core\Containers\FString) & ActivityId, [EOnlineActivityOutcome](API\Plugins\OnlineSubsystem\Interfaces\EOnlineActivityOutcome) ActivityOutcome, const [FOnlineEventParms](API\Plugins\OnlineSubsystem\Interfaces\FOnlineEventParms) & Parms, [FOnEndActivityComplete](API\Plugins\OnlineSubsystem\Interfaces\FOnEndActivityComplete) CompletionDelegate )