/** Notifies the listeners */
protected void fireConfigChangedEvent() {
listeners.dispatch(new ConfigChangedEvent());
}
/**
* Adds a listener to be notified about changes.
*
* <p>Clients are supposed to remove the listeners after they are done with them using the {@link
* ListenerHandle#remove()} method
*
* @param listener the listener
* @return the handle to the registered listener
*/
public ListenerHandle addChangeListener(ConfigChangedListener listener) {
return listeners.addConfigChangedListener(listener);
}