Method getSize

src/fl/stl/json.h:700–700

    // Compatibility with existing API for array/object access
    size_t get_size() const FL_NOEXCEPT { return size(); }
    size_t getSize() const FL_NOEXCEPT { return size(); }
    
    // Set methods for building objects
    void set(const fl::string& key, const json& value) FL_NOEXCEPT {