PRInt32& aNameSpaceID, nsIAtom*& aName, nsIAtom*& aPrefix) const
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;    }