The interface definition for a PureMVC Proxy.

In PureMVC, IProxy implementors assume these responsibilities:

• Implement a common method which returns the name of the Proxy.

Additionally, IProxys typically:

• Maintain references to one or more pieces of model data.
• Provide methods for manipulating that data.
• Generate INotifications when their model data changes.
• Expose their name as a public static var called NAME.
• Encapsulate interaction with local or remote services used to fetch and persist model data.