public static Stream SerializeSystemGuidArray(Guid[] objs, SerializationFormat serializationFormat, WebMessageFormat webMessageFormat)
 {
     if (IsXml(serializationFormat, webMessageFormat))
     {
         var root = new XElement(XName.Get("GuidArray"));
         var xDocument = new XDocument(root);
         foreach (var obj in objs)
         {
             var child = new XElement(XName.Get("Guid"));
             child.Add(XmlConvert.ToString(obj));
         }
         var stream = GetStream(xDocument);
         return stream;
     }
     else
     {
         return GetStream(objs.ToJsonString());
     }
 }
 public static Stream SerializeSystemGuid(Guid obj, SerializationFormat serializationFormat, WebMessageFormat webMessageFormat)
 {
     if (IsXml(serializationFormat, webMessageFormat))
     {
         var root = new XElement(XName.Get("Guid"));
         var xDocument = new XDocument(root);
         root.Add(XmlConvert.ToString(obj));
         var stream = GetStream(xDocument);
         return stream;
     }
     else
     {
         return GetStream(obj.ToJsonString());
     }
 }