/**
* Build an entity manager
*
* @param DriverInterface $driver
* @param MapperInterface $mapper
* @param string $cache_dir
* @return EntityManager
*/
public static function createEntityManager(DriverInterface $driver, MapperInterface $mapper, $cache_dir)
{
$config = new Configuration();
$config->setCacheDir($cache_dir);
return EntityManager::build($driver, $mapper, null, null, $config);
}