private function populateNumeric($em)
{
$zero = new Article();
$zero->setTitle('0');
$zero->setEnabled(true);
$one = new Article();
$one->setTitle('1');
$one->setEnabled(true);
$lower = new Article();
$lower->setTitle('123');
$lower->setEnabled(false);
$upper = new Article();
$upper->setTitle('234');
$upper->setEnabled(false);
$em->persist($zero);
$em->persist($one);
$em->persist($lower);
$em->persist($upper);
$em->flush();
}
