@Override
 public void updateToken(final String series, final String tokenValue, final Date lastUsed) {
   PersistentRememberMeToken read = getTokenForSeries(series);
   PersistentRememberMeToken write =
       new PersistentRememberMeToken(read.getUsername(), series, tokenValue, lastUsed);
   cookiesCollection.update(createIdQuery(series), rememberMeTokenWriteConverter.convert(write));
 }
 @Override
 public void createNewToken(final PersistentRememberMeToken token) {
   cookiesCollection.insert(rememberMeTokenWriteConverter.convert(token));
 }