Asks the receiving responder to add and remove items from a command system.
- iOS 13.0–13.0Deprecated
- tvOS 13.0–13.0Deprecated
An object that you use to modify a command system for your app.
Override this method in your app delegate or view controller to receive a builder object. Use the builder to add and remove
UICommand objects from your app's menu bar or context menus.
Where you override this method determines the command system that the builder updates. To add and remove items from the menu bar using the
main command system, override
build in your app delegate. To build a context menu using the
context system, override this method in your view controller.