/// <summary>
 /// Removes the specified attribute.
 /// </summary>
 /// <param name="OldAttr">The attribute to remove.</param>
 /// <returns>The removed attribute.</returns>
 public Attr RemoveAttributeNode(Attr OldAttr)
 {
     return(Attr.Create(element.removeAttributeNode((IDOMAttr)OldAttr.GetWebKitObject())));
 }