public Object unmarshal(HierarchicalStreamReader reader, UnmarshallingContext context)
{
String createdBy = reader.getAttribute("createdBy");
String createdOn = reader.getAttribute("createdOn");
IssueNote note = new IssueNote();
note.setContent(reader.getValue());
History history = new History();
note.setHistory(history);
if (createdBy != null)
{
history.setCreatedBy(retrieveUser(context, createdBy));
}