code: public void fireReplaceNotification (Iterator<RegistryListener<K, V>> listeners, K replaceKey, V oldValue,
                                           V newValue) {
  
          while ( listeners.hasNext() ) {
              listeners.next().onReplaceEntry(replaceKey, oldValue, newValue);
          }
      }
docs: Fire notification of an entry for which the value was just replaced in the registry.
  @param replaceKey key identifying the entry in the registry for which the value was replaced.
  @param oldValue old value of the entry in the registry.
  @param newValue new value of the entry in the registry.