eZ\Publish\Core\Persistence\Legacy\User\Role\Gateway::loadRoles PHP Method

    public abstract function loadRoles($status = Role::STATUS_DEFINED);

 /**
  * Loads all roles.
  *
  * @param int $status One of Role::STATUS_DEFINED|Role::STATUS_DRAFT
  *
  * @return array
  */
 public function loadRoles($status = Role::STATUS_DEFINED)
 {
     try {
         return $this->innerGateway->loadRoles();
     } catch (DBALException $e) {
         throw new RuntimeException('Database error', 0, $e);
     } catch (PDOException $e) {
         throw new RuntimeException('Database error', 0, $e);
     }
 }