The `GtkActionable` interface provides a convenient way of associating widgets with actions.
It primarily consists of two properties: [property@Gtk.Actionable:action-name] and [property@Gtk.Actionable:action-target]. There are also some convenience APIs for setting these properties.
The action will be looked up in action groups that are found among the widgets ancestors. Most commonly, these will be the actions with the “win.” or “app.” prefix that are associated with the `GtkApplicationWindow` or `GtkApplication`, but other action groups that are added with [method@Gtk.Widget.insert_action_group] will be consulted as well.