/*
  * (non-Javadoc)
  *
  * @see play.Plugin#onStart()
  */
 @Override
 public void onStart() {
   if (Auth.hasService()) {
     log.warn(
         "A auth service was already registered - replacing the old one, however this might hint to a configuration problem if this is a production environment.");
   }
   Auth.service(this);
 }
 /*
  * (non-Javadoc)
  *
  * @see play.Plugin#onStop()
  */
 @Override
 public void onStop() {
   Auth.service(null);
 }