question: returns true if the doubly-nested set did not contain v. concode_field_sep DoubleKeyMap<K1,K2,Set<V>> dkMap concode_field_sep boolean addAll concode_elem_sep Set<V> get concode_elem_sep void clear concode_elem_sep boolean containsKeys concode_elem_sep String toString concode_elem_sep Set<K2> getK2Set concode_elem_sep boolean remove concode_elem_sep Set<K1> getK1Set concode_elem_sep void ensureSetExists concode_elem_sep Set<V> getAllVs
target: boolean function ( K1 arg0 , K2 arg1 , V arg2 ) { ensureSetExists ( arg0 , arg1 ) ; return dkMap . get ( arg0 , arg1 ) . add ( arg2 ) ; }