private function prepareSearchData()
 {
     $client = $this->_getClient();
     $index = $client->getIndex('has_child_test');
     $index->create(array(), true);
     $parentType = $index->getType('parent');
     $childType = $index->getType('child');
     $childMapping = new \Elastica\Type\Mapping($childType);
     $childMapping->setParent('parent');
     $childMapping->send();
     $altType = $index->getType('alt');
     $altDoc = new Document('alt1', array('name' => 'altname'));
     $altType->addDocument($altDoc);
     $parent1 = new Document('parent1', array('id' => 'parent1', 'user' => 'parent1', 'email' => '*****@*****.**'));
     $parentType->addDocument($parent1);
     $parent2 = new Document('parent2', array('id' => 'parent2', 'user' => 'parent2', 'email' => '*****@*****.**'));
     $parentType->addDocument($parent2);
     $child1 = new Document('child1', array('id' => 'child1', 'user' => 'child1', 'email' => '*****@*****.**'));
     $child1->setParent('parent1');
     $childType->addDocument($child1);
     $child2 = new Document('child2', array('id' => 'child2', 'user' => 'child2', 'email' => '*****@*****.**'));
     $child2->setParent('parent2');
     $childType->addDocument($child2);
     $child3 = new Document('child3', array('id' => 'child3', 'user' => 'child3', 'email' => '*****@*****.**', 'alt' => array(array('name' => 'testname'))));
     $child3->setParent('parent2');
     $childType->addDocument($child3);
     $index->refresh();
     return $index;
 }