nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName, const nsAString& aValue, PRBool aNotify) { return SetAttr(aNameSpaceID, aName, nsnull, aValue, aNotify); }
nsGenericDOMDataNode::SetAttr(PRInt32 aNameSpaceID, nsIAtom* aAttr, const nsAReadableString& aValue, PRBool aNotify) { return NS_OK; }
  nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,                   const nsAString& aValue, PRBool aNotify)  {    return SetAttr(aNameSpaceID, aName, nsnull, aValue, aNotify);  }