[FOnlinePartyDataConstPtr](API\Plugins\OnlineSubsystem\Interfaces\FOnlinePartyDataConstPtr) GetPartyData ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & LocalUserId, const [FOnlinePartyId](API\Plugins\OnlineSubsystem\FOnlinePartyId) & PartyId, const [FName](API\Runtime\Core\UObject\FName) & Namespace ) const