@Override
 public void addRule(UrlRewriteRuleDescriptor rule) {
   ruleList.add(rule);
   String name = rule.name();
   if (name != null && name.length() > 0) {
     ruleMap.put(rule.name(), rule);
   }
 }
 @Override
 public UrlRewriteRuleDescriptor addRule(String name) {
   UrlRewriteRuleDescriptor rule = newRule();
   rule.name(name);
   addRule(rule);
   return rule;
 }