class AnInterface;
typedef AnInterface *AnInterface_ptr;
class AnInterface_var;


class AnInterface : public virtual Object
{
  public:

    typedef AnInterface_ptr _ptr_type;
    typedef AnInterface_var _var_type;

    static AnInterface_ptr _duplicate (AnInterface_ptr obj);
    static AnInterface_ptr _narrow (Object_ptr obj);
    static AnInterface_ptr _nil ();

    virtual ... AnOperation (...) = 0;

  protected:

    AnInterface ();
    virtual ~AnInterface ();

    ...
}