It contains a description of how to trigger the shortcut via a [class@Gtk.ShortcutTrigger] and a way to activate the shortcut on a widget
via a [class@Gtk.ShortcutAction].
The actual work is usually done via [class@Gtk.ShortcutController], which decides if and when to activate a shortcut. Using that
controller directly however is rarely necessary as various higher level convenience APIs exist on `GtkWidget`s that make it easier to use
shortcuts in GTK.
`GtkShortcut` does provide functionality to make it easy for users to work with shortcuts, either by providing informational strings for
display purposes or by allowing shortcuts to be configured.