36 struct JsonWriter {  struct
37     std::string output;
40     std::stack<bool> stack;
42     void StartObject() {  in StartObject()
48     void StartKeyedObject(std::string const& key) {  in StartKeyedObject()
54     void EndObject() {  in EndObject()
60     void StartKeyedArray(std::string const& key) {  in StartKeyedArray()
66     void StartArray() {  in StartArray()
72     void EndArray() {  in EndArray()
79     void AddKeyedString(std::string const& key, std::string const& value) {  in AddKeyedString()
84     void AddString(std::string const& value) {  in AddString()
90     void AddKeyedBool(std::string const& key, bool value) {  in AddKeyedBool()
95     void AddBool(bool value) {  in AddBool()
102     void CommaAndNewLine() {  in CommaAndNewLine()
112     void Indent() {  in Indent()