typedef typename [TChooseClass](API\Runtime\Core\Templates\TChooseClass)< [TOr](API\Runtime\Core\Templates\TOr)< [TIsPODType](API\Runtime\Core\Math\TIsPODType)< [FPartyMemberJoinInProgressRequest](API\Plugins\Party\Party\FPartyMemberJoinInProgressReques-) >, [TIsPointer](API\Runtime\Core\Templates\TIsPointer)< [FPartyMemberJoinInProgressRequest](API\Plugins\Party\Party\FPartyMemberJoinInProgressReques-) >>::Value, [FPartyMemberJoinInProgressRequest](API\Plugins\Party\Party\FPartyMemberJoinInProgressReques-), const [MutableJoinInProgressDataRequestType](API\Plugins\Party\Party\FPartyMemberRepData\MutableJoinInProgressDataRequest-) & >::Result JoinInProgressDataRequestArgType