35         mMap[std::forward<K>(k)] = std::forward<V>(v);  in set()
41         const_iterator iter = mMap.find(k);  in get()
42         if (iter == mMap.end()) {  in get()
50         return mMap.erase(k);  in erase()
55         const_iterator iter = mMap.find(k);  in eraseIfEqual()
56         if (iter == mMap.end()) {  in eraseIfEqual()
60             mMap.erase(iter);  in eraseIfEqual()
69     void setLocked(const K& k, V&& v) { mMap[k] = std::forward<V>(v); }  in setLocked()
70     void setLocked(const K& k, const V& v) { mMap[k] = v; }  in setLocked()
73         const_iterator iter = mMap.find(k);  in getLocked()
74         if (iter == mMap.end()) {  in getLocked()
80     size_type eraseLocked(const K& k) { return mMap.erase(k); }  in eraseLocked()
83     iterator begin() { return mMap.begin(); }  in begin()
84     iterator end() { return mMap.end(); }  in end()
85     const_iterator begin() const { return mMap.begin(); }  in begin()
86     const_iterator end() const { return mMap.end(); }  in end()
90     std::map<K, V> mMap;  variable