void function ( ) { observers . clear ( ) ; }
deletes all observers of this observable . concode_field_sep LinkedHashSet observers concode_elem_sep boolean changed concode_field_sep void addObserver concode_elem_sep boolean hasChanged 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