/**
  * método para pesquisa de unidades organizacinais para combo
  * @param array $params
  * @return array $out
  */
 public function sistemaAutoComplete(\Core_Dto_Search $dto, $entidade)
 {
     $queryBuilder = $this->_em->createQueryBuilder();
     $query = $queryBuilder->select('c')->from($entidade, 'c');
     if (!is_null($dto->hasQuery())) {
         $search = mb_strtolower($dto->getQuery(), 'UTF-8');
         $field = $queryBuilder->expr()->lower($queryBuilder->expr()->trim('c.nome'));
         $query->andWhere($queryBuilder->expr()->like('clear_accentuation(' . $field . ')', $queryBuilder->expr()->literal($this->removeAccent('%' . $search . '%'))));
     }
     $query->setMaxResults(10);
     $res = $query->getQuery()->getArrayResult();
     $out = array();
     foreach ($res as $item) {
         $out[$item['codigo']] = $item['nome'];
     }
     return $out;
 }