Description
When extending MarkupCache to hook inother MarkupLoader for certain components, I'd like to be able to delegate a call to clearing the cache to this other markup loader.
To be able to do so, I need to have the final removed from MarkupCache.
Use case: http://www.footprint.de/fcc/2008/11/some-wicket-scala/ (To delegate the clear to FreeMarker/Velocity e.g.)