NS_IMETHOD GetAttrNameAt(PRInt32 aIndex, PRInt32& aNameSpaceID, nsIAtom*& aName, nsIAtom*& aPrefix) const {
NS_IMETHOD GetAttrNameAt(PRInt32 aIndex, PRInt32* aNameSpaceID, nsIAtom** aName, nsIAtom** aPrefix) const {
  NS_IMETHOD GetAttrNameAt(PRInt32 aIndex, PRInt32& aNameSpaceID, nsIAtom*& aName, nsIAtom*& aPrefix) const {    aName = nsnull;    aPrefix = nsnull;    return NS_ERROR_ILLEGAL_VALUE;  }