Method WriteNull

rapidjson/writer.h:264–267

    static const size_t kDefaultLevelDepth = 32;

    bool WriteNull()  {
        PutReserve(*os_, 4);
        PutUnsafe(*os_, 'n'); PutUnsafe(*os_, 'u'); PutUnsafe(*os_, 'l'); PutUnsafe(*os_, 'l'); return true;
    }

    bool WriteBool(bool b)  {
        if (b) {