Interface to be implemented by a reloading-aware ClassLoader
(e.g. a Groovy-based ClassLoader). Detected for example by
Spring's CGLIB proxy factory for making a caching decision.
If a ClassLoader does not implement this interface,
then all of the classes obtained from it should be considered
as not reloadable (i.e. cacheable).
If a ClassLoader does not implement this interface, then all of the classes obtained from it should be considered as not reloadable (i.e. cacheable).