This function is called when implementing subclasses of AtkObject.
It does initialization required for the new object. It is intended
that this function should called only in the ..._new() functions used
to create an instance of a subclass of AtkObject
This function is called when implementing subclasses of AtkObject. It does initialization required for the new object. It is intended that this function should called only in the ..._new() functions used to create an instance of a subclass of AtkObject