void function ( Listener arg0 ) { listeners . add ( arg0 ) ; }
registers new listener concode_field_sep List<Listener> listeners concode_elem_sep boolean initialized concode_field_sep void init concode_elem_sep List<Listener> listeners concode_elem_sep void doInit concode_elem_sep void doCheckAndNotify concode_elem_sep void checkAndNotify concode_elem_sep void remove