Method consume_str

tests/test_methods_and_attributes.cpp:59–59

    void add10(const int *other) { value += *other; } // passing by const pointer

    void consume_str(std::string &&) {}

    ExampleMandA self1() { return *this; }              // return by value
    ExampleMandA &self2() { return *this; }             // return by reference