How to convert a method function in class into C++ using matlab coder

For example in the simple class above，if I want to convert the methods myAdd in myClass into C++ using matlab coder，how to achieve it。

classdef myClass < handle
  properties
      x
      y
  end

    methods 
        function obj = myClass(a, b)
            obj.x = a;
            obj.y = b;
        end

        function sum = myAdd(obj)
            sum = obj.x + obj.y;
        end
    end

end