When Access to UnrealEngine/Plugins/Developer/Concert

hello!

I have a trouble in access to FConcertClientSettings.
when I use below line to get access to FConcertClientSettings

include “…/Plugins/Developer/Concert/ConcertMain/Source/ConcertClient/Public/ConcertClientSettings.h”
FConcertClientSettings* MultiUserSettings = GetMutableDefault();

it gives me error.
atal error C1083: Cannot open include file: ‘ConcertClientSettings.generated.h’: No such file or directory.

I add Concert in build.cs

Can you help me?