[IOnlinePartyJoinInfoConstPtr](API\Plugins\OnlineSubsystem\Interfaces\IOnlinePartyJoinInfoConstPtr) MakeJoinInfo ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & LocalUserId, const [FOnlinePartyId](API\Plugins\OnlineSubsystem\FOnlinePartyId) & PartyId )