bool ApplyCrossplayRestriction ( [FPartyJoinApproval](API\Plugins\Party\Party\FPartyJoinApproval) & JoinApproval, const [FUserPlatform](API\Plugins\Party\FUserPlatform) & Platform, const [FOnlinePartyData](API\Plugins\OnlineSubsystem\Interfaces\FOnlinePartyData) & JoinData ) const