How to return a std::function object of member function which define with parameter packs?

I want to define a member function which can be returned the std::function object of another member function. In general, it is very easily. But if that member function is defined by parameter packs, I don't know how to do it.

I wrote some code as follow,

class Example {
  pubilc:

  template<typename... Args>
  double getSome(Args.. args) {
    // do something
  }

  template<typename... Args>
  std::function<double(Args...)> getSomeFun() {
        return std::bind(&Example::getSome<Args...>, this);
  }

};

That's look like correctly, unfortunate. When I call getSetArgsFunction() at main() method, I get a lot of error information. At main() method, my code as follow,

int main() {
  Example e;
  e.getSomeFun()(1.0, 2.0, 3.0);
}

I try to compile it, but gcc print some errors as follow,

error: no match for call to ‘(std::function<double()>) (double, double, double)’

So, what should we do?