/**
* Recasts the object as a child object
* @param DbConnection $conn
* @return DbConnection
*/
public static function fromSelf(DbConnection $conn)
{
$cls = get_called_class();
$cls = new $cls($conn->getUser(), $conn->getPassword(), $conn->getHost(), $conn->getSchema());
$cls->setSlave($conn->getSlave());
return $cls;
}
