This object associates a cache status with each IInfoset object in a CacheElement object. The status determines whether the data needs to be refreshed.Your ExtensionModel object method for refreshInfoset() should update the cache status for each data set it updates, including core data sets.
[static] Efficiently determines whether or not one class descends from
another in inheritance hierarchy- class relationships are cached
by the ClassUtils implementation-
(uses org.as3commons lib to quickly discover class hierarchy.