private static bool VerifyRootNode(XmlNode rootNode)
{
var majorVersion = rootNode.GetXmlNodeValue("@VersionMajor");
IsoVersionEnum isoVersion;
if (majorVersion == null || Enum.TryParse(majorVersion, true, out isoVersion) == false ||
isoVersion != IsoVersionEnum.Standard_V2_Final_Draft)
return false;
return true;
}