[flexcoders] Dispatch an event from a non visual non IEventDispatcher class

[dorkie dork from dorktown]

Is there a way to dispatch an event from a class that doesn't extend
EventDispatcher? For example, lets say you have 30 different value
object classes. You want to have one method called invalidateData()
that dispatches an event to get the latest content from the server.
Since  I want to keep the data separate from the view I may need to
call this in several different places. Any help would be appreciated.