protected static function useCustomGrammar($connection)
    {
        // just for MySqlGrammar
        if (get_class($connection) === 'Illuminate\Database\MySqlConnection') {
            $MySqlGrammar = $connection->withTablePrefix(new MySqlGrammar);
            $connection->setSchemaGrammar($MySqlGrammar);
        }

        return $connection->getSchemaBuilder();
    }