private static Parser<string> Node(string tagName, Attribute attribute) =>
     (from openTag in TagParser.OpenTag
     where openTag.Name == tagName
     where ((OpenTag)openTag).Attributes.Any(atr => atr.Key == attribute.Name && atr.Value == attribute.Value)
     from content in Item.Many()
     from closeTag in TagParser.CloseTag(openTag)
     select string.Join(string.Empty, content)).Token();
 public static Parser<string> FindTag(Attribute attribute) =>
     from dirt in Parse.AnyChar.Except(Node(attribute)).Many()
     from content in Node(attribute)
     select content;