text: //
  //  sdHolder.h
  //  libSpatDIFTest
  //
  //  Created by Chikashi Miyama on 14/10/2016.
  //  Copyright © 2016 ICST. All rights reserved.
  //
  
  #pragma once
  
  
  struct sdProtoHolder{};
  
  template<typename T>
  struct sdHolder : public sdProtoHolder {
      sdHolder(const T& item) : item(item) {}
      T item;
  };
  
  