// Locates the property in the component map and replaces it with an
 // reset copy.
 private void reset(String componentName, String name) {
   Map<String, ConfigProperty> map = properties.get(componentName);
   if (map != null) {
     ConfigProperty prop = map.get(name);
     if (prop != null) {
       map.put(name, ConfigProperty.resetProperty(prop));
       accumulator.add(componentName);
       return;
     }
     log.warn("Unable to reset non-existent property {} for component {}", name, componentName);
   }
 }