[FOnlinePartyMemberConstPtr](API\Plugins\OnlineSubsystem\Interfaces\FOnlinePartyMemberConstPtr) GetPartyMember ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & LocalUserId, const [FOnlinePartyId](API\Plugins\OnlineSubsystem\FOnlinePartyId) & PartyId, const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & MemberId ) const