[FOnlinePartyConstPtr](API\Plugins\OnlineSubsystem\Interfaces\FOnlinePartyConstPtr) GetParty ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & LocalUserId, const [FOnlinePartyTypeId](API\Plugins\OnlineSubsystem\FOnlinePartyTypeId) & PartyTypeId ) const