NS_IMETHOD AddObserver(nsIRDFObserver* n) { return mInner->AddObserver(n); }
NS_IMETHODIMP nsCharsetMenu::AddObserver(nsIRDFObserver* n) { return mInner->AddObserver(n); }
  NS_IMETHOD AddObserver(nsIRDFObserver* n)  {      return mInner->AddObserver(n);  }