question: deregisters an object for notification of changes to the overlay . concode_field_sep EventListenerList changeListeners concode_field_sep void notifyListeners concode_elem_sep void fireOverlayChanged concode_elem_sep void addChangeListener
target: void function ( OverlayChangeListener arg0 ) { ParamChecks . nullNotPermitted ( arg0 , "srini_string" ) ; this . changeListeners . remove ( OverlayChangeListener . class , arg0 ) ; }