[UViewportDragOperationComponent](API\Editor\ViewportInteraction\UViewportDragOperationComponent) * GetInteractionType ( [UActorComponent](API\Runtime\Engine\Components\UActorComponent) * DraggedComponent, [TOptional](API\Runtime\Core\IO\TOptional)< [FTransformGizmoHandlePlacement](API\Editor\ViewportInteraction\FTransformGizmoHandlePlacement) > & OutHandlePlacement )