return NS_REINTERPRET_CAST(nsISupports**, begin_assignment());
return NS_REINTERPRET_CAST(T**, begin_assignment());
      StartAssignment()        {#ifndef NSCAP_FEATURE_INLINE_STARTASSIGNMENT          return NS_REINTERPRET_CAST(nsISupports**, begin_assignment());#else          assign_assuming_AddRef(0);          return NS_REINTERPRET_CAST(nsISupports**, &mRawPtr);#endif        }