Collection usernames = hardtokensession.findHardTokenByTokenSerialNumber(administrator, tokensn);  Iterator iter = usernames.iterator(); while(iter.hasNext()){ try{ user = adminsession.findUser(administrator, (String) iter.next()); }catch(AuthorizationDeniedException e){}  if(user!=null) userlist.add(user); }  users.setUsers(userlist, informationmemory.getCAIdToNameMap());  returnval= users.getUsers(index,size);  return returnval;
if(user!=null) userlist.add(user); }  users.setUsers(userlist, informationmemory.getCAIdToNameMap());  returnval= users.getUsers(index,size);  return returnval;
    public UserView[] filterByTokenSN(String tokensn, int index,int size) throws Exception{        UserView[] returnval = null;        UserDataVO user = null;        ArrayList userlist = new ArrayList();                Collection usernames = hardtokensession.findHardTokenByTokenSerialNumber(administrator, tokensn);                Iterator iter = usernames.iterator();        while(iter.hasNext()){       	             try{                  user = adminsession.findUser(administrator, (String) iter.next());            }catch(AuthorizationDeniedException e){}                        if(user!=null)                userlist.add(user);        }                users.setUsers(userlist, informationmemory.getCAIdToNameMap());                returnval= users.getUsers(index,size);                return returnval;    }