NS_IMETHOD GetAttributeNodeNS(const nsString& aNamespaceURI, const nsString& aLocalName,
NS_IMETHOD GetAttributeNodeNS(const nsAReadableString& aNamespaceURI, const nsAReadableString& aLocalName,
  NS_IMETHOD GetAttributeNodeNS(const nsString& aNamespaceURI,                                const nsString& aLocalName,                                nsIDOMAttr** aReturn) {    return mInner.GetAttributeNodeNS(aNamespaceURI, aLocalName, aReturn);  }