29 bool insert(std::map<T, std::set<U>> *mapOfSet, T key, U value) {  in insert()  argument
30     auto iter = mapOfSet->find(key);  in insert()
31     if (iter == mapOfSet->end()) {  in insert()
33         mapOfSet->insert(std::make_pair(key, valueSet));  in insert()
44 bool erase(std::map<T, std::set<U>> *mapOfSet, T key, U value) {  in erase()  argument
46     auto iter = mapOfSet->find(key);  in erase()
47     if (iter != mapOfSet->end()) {  in erase()
52             mapOfSet->erase(iter);  in erase()
60 bool contains(std::map<T, std::set<U>> *mapOfSet, T key, U value) {  in contains()  argument
61     auto iter = mapOfSet->find(key);  in contains()
62     if (iter != mapOfSet->end()) {  in contains()