set_default_action_and_target_value

Description:

public void set_default_action_and_target_value (string action, Variant? target)

Sets the default action of this to action.

This action is activated when the notification is clicked on. It must be an application-wide action (start with "app.").

If target is non-null, action will be activated with target as its parameter. If target is floating, it will be consumed.

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

this	a Notification
action	an action name
target	a Variant to use as `action`'s parameter, or null