Information about a path. You do not use the sub path item object to create a path. Rather, you create path segments using the sub path info object. Use the sub path item object to retrieve information about a path. All properties are read-only.
[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.