[b]Note:[/b] The base [Object] defines a few notifications ([constant NOTIFICATION_POSTINITIALIZE] and [constant NOTIFICATION_PREDELETE]). Inheriting classes such as [Node] define a lot more notifications, which are also received by this method.
+ [b]Note:[/b] Unlike other virtual methods, this method is called automatically for every script that overrides it. This means that the base implementation should not be called via [code]super[/code] in GDScript or its equivalents in other languages.
Thaddeus Crews