public void SetUp()
        {
            string xml = @"
          <t:securityMetadata xmlns=""http://www.re-motion.org/Data/Mapping/1.0"" xmlns:t=""http://www.re-motion.org/Security/Metadata/1.0"">
            <t:classes>
              <t:class id=""Class1"" />
              <t:class id=""7823-qwer-124"" name=""Class2"" />
            </t:classes>

            <classes>
              <class id=""Class1"">
                <entity>class1</entity>
              </class>
            </classes>
          </t:securityMetadata>";

            _document = new XmlDocument();
            _document.LoadXml(xml);

            _converter = new NodeStackToXPathConverter();
            _converter.IncludeNamespaces = false;
        }
 public XmlDocumentSimilarConstraint(XmlDocument expected)
     : base(expected)
 {
     _nodeStackToXPathConverter = new NodeStackToXPathConverter();
     _nodeStackToXPathConverter.IncludeNamespaces = true;
 }