public function loadEstudiante(ObjectManager $manager)
 {
     $estudiante = array(array(1, 12, 1), array(2, 14, 1), array(3, 19, 1), array(4, 37, 1), array(5, 40, 1), array(6, 41, 1), array(7, 48, 1), array(8, 50, 1), array(9, 55, 1), array(10, 56, 1), array(11, 63, 1), array(12, 64, 1), array(13, 65, 1), array(14, 66, 1), array(15, 67, 1), array(16, 69, 1), array(17, 71, 1), array(18, 72, 1), array(19, 73, 1), array(20, 75, 1), array(21, 76, 1), array(22, 78, 1), array(23, 84, 1), array(24, 87, 1), array(25, 44, 4), array(26, 16, 4), array(27, 13, 4), array(28, 46, 4), array(29, 35, 4), array(30, 10, 4), array(31, 2, 4), array(32, 42, 4), array(33, 15, 4), array(34, 43, 4), array(35, 27, 4), array(36, 22, 4), array(37, 30, 2), array(38, 32, 2), array(39, 36, 2), array(40, 39, 2), array(41, 47, 2), array(42, 49, 2), array(43, 57, 2), array(44, 31, 1), array(45, 45, 1), array(46, 52, 1), array(47, 54, 1), array(48, 58, 1), array(49, 60, 1), array(50, 74, 1), array(51, 79, 1), array(52, 83, 1), array(53, 85, 2), array(54, 33, 2), array(55, 7, 2), array(56, 59, 2), array(57, 81, 2), array(58, 82, 2), array(59, 18, 2), array(60, 68, 4), array(61, 62, 2), array(62, 70, 2), array(63, 53, 3), array(64, 24, 4), array(65, 80, 1), array(66, 86, 2), array(67, 17, 1));
     $em = $this->container->get('doctrine')->getEntityManager('default');
     foreach ($estudiante as $data) {
         $entityEstudiante = new Estudiante();
         $entityPersona = $em->getRepository('AppBundle:Persona')->find($data[1]);
         $entityEstudiante->setPersona($entityPersona);
         $entityPnf = $em->getRepository('AppBundle:Pnf')->find($data[2]);
         $entityEstudiante->setPnf($entityPnf);
         $manager->persist($entityEstudiante);
     }
     $manager->flush();
 }