metodos pang y pong

public void pong()
{
log.info("filtrando paises por: #{pais.pais}");
List list = entityManager.createQuery("select p from Pais p where p.pais like #{pais.pais}").getResultList();
Iterator iterator = list.iterator();
while (iterator.hasNext()){
log.info("pais: " + iterator.next().getPais());
}

log.info("ping.pong() action called");
facesMessages.add("pong");
}