question: removes the specified observer from the list of observers . passing null wo n't do anything . concode_field_sep boolean changed concode_elem_sep List<Observer> observers concode_field_sep void deleteObservers concode_elem_sep void addObserver concode_elem_sep boolean hasChanged concode_elem_sep void clearChanged concode_elem_sep int countObservers concode_elem_sep void setChanged concode_elem_sep void notifyObservers concode_elem_sep void notifyObservers
target: void function ( Observer arg0 ) { observers . remove ( arg0 ) ; }