Perform any custom setup associated with a sharing service picker.
- macOS 10.13+
The sharing service picker the system is about to display.
Override this method, as needed, and use it to configure the sharing service picker before AppKit displays it. The default implementation of this method does nothing. You might customize the contents of the share menu or provide a custom delegate for the chosen sharing service. You can get the default sharing menu item by calling
standard on the current document controller.