public XmlXPathCDataSection(string data, XmlXPathDocument doc) : base(data, doc)
 {
     _xPathExpression = new Lazy <string>(() => XmlXPathText.GetTextXPathExpression(this));
 }
 public XmlXPathElement(string prefix, string localName, string namespaceURI, XmlXPathDocument doc) : base(prefix, localName, namespaceURI, doc)
 {
     _xPathExpression = new Lazy <string>(() => GetXPathExpression());
 }