void CreateGameMatch ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & UserId, const [FGameMatchesData](API\Plugins\OnlineSubsystem\Interfaces\FGameMatchesData) & MatchesData, const [FOnCreateGameMatchComplete](API\Plugins\OnlineSubsystem\Interfaces\FOnCreateGameMatchComplete) & CompletionDelegate )