Add the set of Rule instances defined in this RuleSet to the
specified Digester
instance, associating them with
our namespace URI (if any). This method should only be called
by a Digester instance.
digester.addCallMethod(prefix + "taglib/uri",
"setTldUri", 0);
digester.addCallMethod(prefix + "taglib/listener/listener-class",
"addApplicationListener", 0);