static [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FBrushBuilderDragDropOp](API\Editor\UnrealEd\DragAndDrop\FBrushBuilderDragDropOp) > New ( [TWeakObjectPtr](API\Runtime\Core\UObject\TWeakObjectPtr)< [UBrushBuilder](API\Runtime\Engine\Engine\UBrushBuilder) > InBrushBuilder, const [FSlateBrush](API\Runtime\SlateCore\Styling\FSlateBrush) * InIconBrush, bool bInIsAddtive )