question: void removeListener ( String listenerID ) { if ( listenerObjects != null ) { synchronized ( listenerObjects ) { listenerObjects . remove ( listenerID ) ; if ( listenerObjects . isEmpty ( ) ) { deregisterListener ( ) ; } } if ( debug . messageEnabled ( ) ) { debug . message ( "ServiceConfigManagerImpl(" + serviceName + "):removeListener ListenerId: " + listenerID ) ; } } }
target:  Unregisters the listener from the service for the given listener ID. The ID was issued when the listener was registered.