Notification.setDefaultAction

Sets the default action of notification to detailed_action. This action is activated when the notification is clicked on.

The action in detailed_action must be an application-wide action (it must start with "app."). If detailed_action contains a target, the given action will be activated with that target as its parameter. See [gio.action.Action.parseDetailedName] for a description of the format for detailed_action.

When no default action is set, the application that the notification was sent on is activated.