private IAtsUser getSelectedUser() throws OseeCoreException {
   if (assigneeCombo == null || assigneeCombo.getUser() == null) {
     return null;
   }
   return AtsClientService.get()
       .getUserServiceClient()
       .getUserFromOseeUser(assigneeCombo.getUser());
 }
 public void setSelectedUser(User user) {
   if (assigneeCombo != null) {
     assigneeCombo.set(user);
   }
 }