public static EditTextActionOperation RemoveElement(this EditTextActionOperation op, XElement element)
 => op.DeleteBetween(
 public static EditTextActionOperation RenameElement(this EditTextActionOperation op, XElement element, string newName)
 => op.Replace(element.NameSpan, newName)
 .Replace(element.ClosingTag.Span.Start + 2, element.Name.Length, newName);