1  #include <vector>
       2  
       3  class ExtraParts;
       4  
       5  class MainParts {
       6   public:
       7    MainParts ();
       8    virtual ~MainParts ();
       9    virtual void AddParts (ExtraParts *parts);
      10  
      11    virtual void PreEarlyInitialization ();
      12  
      13   protected:
      14    std::vector<ExtraParts *> main_extra_parts_;
      15  };