text: #ifndef WPP_MILL_TYPE_INTER_H
  #define WPP_MILL_TYPE_INTER_H
  
  #include <vector>
  #include "mill_type.hpp"
  
  namespace mill
  {
  
  class mill_type_inter_ : public mill_type_base_
  {
  
  };
  
  } //namespace mill
  
  #endif //WPP_MILL_TYPE_INTER_H