DispatcherListener
Use a DispatcherListener object to execute code when a Dispatcher is initialized or destroyed. A DispatcherListener 
is an easy way to associate customizable components like a ConfigurationManager 
with a Dispatcher.
Example
  static {
     Dispatcher.addDispatcherListener(new DispatcherListener() {
         public void dispatcherInitialized(Dispatcher du) {
            // do something to Dispatcher after it is initialized eg.
            du.setConfigurationManager(....);
         }
         public void dispatcherDestroyed(Dispatcher du) {
            // do some cleanup after Dispatcher is destroyed.
         }
     });
  }
