考虑一个C ++模板类（mixin类），该类继承自模板上声明的同一类，即
template <class Model>
class Mixin : public Model {
...
}
The motivation is to reuse this Mixin to extend methods for different Model classes. For example, for a model class ModelOne,
class Realization : public Mix<ModelOne> {
...
}
How do I explicitly invoke - in Realization class - the constructor of ModelOne class? Different model class may have different constructor signature.
