PRBool aNotify) { return mInner.ReplaceChildAt(aKid, aIndex, aNotify);
PRBool aNotify, PRBool aDeepSetDocument) { return mInner.ReplaceChildAt(aKid, aIndex, aNotify, aDeepSetDocument);
  NS_IMETHOD ReplaceChildAt(nsIContent* aKid, PRInt32 aIndex,                            PRBool aNotify) {    return mInner.ReplaceChildAt(aKid, aIndex, aNotify);  }