public With_xml_serializer()
     : base(x => XmlSerializationHelper.CloneExpression(x, new[] { typeof(List <string>) }))
 {
 }
 public With_xml_serializer()
     : base(x => XmlSerializationHelper.CloneExpression(x, new[] { typeof(List <Aqua.TypeSystem.TypeInfo>), typeof(Aqua.TypeSystem.TypeInfo[]) }))
 {
 }