Method OnString

library/cpp/json/ut/json_reader_fast_ut.cpp:136–139

            }

            bool OnString(const TStringBuf& v) override {
                Events.push_back(TEvent(v, E_STR));
                return true;
            }

            bool OnMapKey(const TStringBuf& v) override {
                Events.push_back(TEvent(v, E_KEY));