The interface definition for a PureMVC Observer.
IObserver implementors assume these responsibilities:
PureMVC does not rely upon underlying event models such as the one provided with Flash.
The Observer Pattern as implemented within PureMVC exists to support event driven communication between the application and the actors of the MVC triad.
An Observer is an object that encapsulates information
about an interested object with a notification method that
should be called when an
INotification is broadcast. The Observer then
acts as a proxy for notifying the interested object.
Observers can receive
Notifications by having their
notifyObserver method invoked, passing
in an object implementing the
INotification interface, such
as a subclass of
Set the notification method.
The notification method should take one parameter of type