void Init_example(void) {
    int i;

    mExample = rb_define_module("Example");
    _mSWIG = rb_define_module_under(mExample, "SWIG");

    for (i = 0; swig_types_initial[i]; i++) {
        swig_types[i] = SWIG_TypeRegister(swig_types_initial[i]);
        SWIG_define_class(swig_types[i]);
    }

    rb_define_singleton_method(mExample, "ABC", VALUEFUNC(ABC_get), 0);
    rb_define_singleton_method(mExample, "ABC=", VALUEFUNC(ABC_set), 1);
}