[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category=TabList) bool RegisterTab ( [FName](API\Runtime\Core\UObject\FName) TabNameID, [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [UCommonButtonBase](API\Plugins\CommonUI\UCommonButtonBase) > ButtonWidgetType, [UWidget](API\Runtime\UMG\Components\UWidget) * ContentWidget, const int32 TabIndex )