public function load(ObjectManager $manager)
 {
     $estimations = array(array('task 1 sub 1 sub 1', 'tech 1', 2), array('task 1 sub 1 sub 2', 'tech 1', 3), array('task 1 sub 2', 'tech 1', 4));
     foreach ($estimations as $e) {
         $estimation = new Estimation();
         $estimation->setTask($this->getReference($e[0]));
         $estimation->setTechnology($this->getReference($e[1]));
         $estimation->setTime($e[2]);
         $manager->persist($estimation);
     }
     $manager->flush();
 }
 /**
  * Add estimation
  *
  * @param \Est\AppBundle\Entity\Estimation $estimation
  *
  * @return Task
  */
 public function addEstimation(\Est\AppBundle\Entity\Estimation $estimation)
 {
     $this->estimations[] = $estimation;
     $estimation->setTask($this);
     return $this;
 }