question: remove a state from the set . if a state was removed , return true . concode_field_sep Vector<AccessibleState> states concode_field_sep boolean add concode_elem_sep boolean contains concode_elem_sep void addAll concode_elem_sep void clear concode_elem_sep AccessibleState[] toArray concode_elem_sep String toString
target: boolean function ( AccessibleState arg0 ) { return states . remove ( arg0 ) ; }