boolean function ( ) { return changed ; }
returns the changed flag for this observable . concode_field_sep boolean changed concode_elem_sep List<Observer> observers concode_field_sep void deleteObservers concode_elem_sep void addObserver concode_elem_sep void clearChanged concode_elem_sep int countObservers concode_elem_sep void deleteObserver concode_elem_sep void setChanged concode_elem_sep void notifyObservers concode_elem_sep void notifyObservers