Put class method into map and call it (C++11)

TestClass

class TestClass {
public:
    enum MethodEnum {
        METHOD_1,
        METHOD_2,
        METHOD_3
    };

    std::map<MethodEnum, std::function<void(void)>> method_map;

    void Method1() {
        printf("method1\n");
    }

    void Method2() {
        printf("method2\n");
    }

    void Method3() {
        printf("method3\n");
    }

    void Init() {
        method_map.insert(std::make_pair(METHOD_1, std::bind(&TestClass::Method1, this)));
        method_map.insert(std::make_pair(METHOD_2, std::bind(&TestClass::Method2, this)));
        method_map.insert(std::make_pair(METHOD_3, std::bind(&TestClass::Method3, this)));
    }
};

bool Test() {
    TestClass test_class;

    test_class.Init();
    test_class.method_map.at(TestClass::METHOD_1)();
    test_class.method_map.at(TestClass::METHOD_2)();
    test_class.method_map.at(TestClass::METHOD_3)();
}