Method setExtra1

tests/test_pickling.cpp:69–69

        const std::string &value() const { return m_value; }

        void setExtra1(int extra1) { m_extra1 = extra1; }
        void setExtra2(int extra2) { m_extra2 = extra2; }
        int extra1() const { return m_extra1; }
        int extra2() const { return m_extra2; }