public ReaderCallbackInfo(XmlSerializationReaderInterpreter sri, XmlTypeMapping typeMap)
 {
     _sri     = sri;
     _typeMap = typeMap;
 }
 public FixupCallbackInfo(XmlSerializationReaderInterpreter sri, ClassMap map, bool isValueList)
 {
     _sri         = sri;
     _map         = map;
     _isValueList = isValueList;
 }