virtual void TriggerOnChatRoomJoinPublicDelegates ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & Param1, const [FChatRoomId](API\Plugins\OnlineSubsystem\Interfaces\FChatRoomId) & Param2, bool Param3, const [FString](API\Runtime\Core\Containers\FString) & Param4 )