Request target that is not a Wicket resource. For example, such a resource could denote an image in the web application directory (not mapped to a Wicket servlet). NOTE: this target can only be used in a servlet environment with {@link org.apache.wicket.request.cycle.RequestCycle}s.
NOTE: this class is a wrapper around {@link ResourceStreamRequestHandler#ResourceStreamRequestHandler(org.apache.wicket.util.resource.IResourceStream)}, and kept for compatibility purposes.
@author Eelco Hillenius