void BuildColumnWidget ( const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SConcertSessionActivities](API\Plugins\ConcertSharedSlate\Session\Activity\SConcertSessionActivities) > & Owner, const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FConcertSessionActivity](API\Plugins\ConcertSyncCore\FConcertSessionActivity) > & Activity, [SOverlay::FScopedWidgetSlotArguments](API\Runtime\SlateCore\Widgets\SOverlay\FScopedWidgetSlotArguments) & Slot ) const