private function populate()
{
$root = new RootCategory();
$root->setTitle("Food");
$root2 = new RootCategory();
$root2->setTitle("Sports");
$child = new RootCategory();
$child->setTitle("Fruits");
$child->setParent($root);
$child2 = new RootCategory();
$child2->setTitle("Vegitables");
$child2->setParent($root);
$childsChild = new RootCategory();
$childsChild->setTitle("Carrots");
$childsChild->setParent($child2);
$potatoes = new RootCategory();
$potatoes->setTitle("Potatoes");
$potatoes->setParent($child2);
$this->em->persist($root);
$this->em->persist($root2);
$this->em->persist($child);
$this->em->persist($child2);
$this->em->persist($childsChild);
$this->em->persist($potatoes);
$this->em->flush();
}
