NS_IMETHOD AddObserver(nsIRDFObserver* n) { return mInner->AddObserver(n); }
NS_IMETHOD AddObserver(nsIRDFObserver* aObserver) { return mInner->AddObserver(aObserver); }
    NS_IMETHOD AddObserver(nsIRDFObserver* n) {        return mInner->AddObserver(n);    }