private final function addAutoIncrement(string $key, array $column): string
    {
        $autoIncrement = "";
        if (array_key_exists($key, $column) && in_array(
                ColumnInterface::OPT_AUTO_INCREMENT,
                $column[$key]->getOption())) {
            $autoIncrement .= "MODIFY "
                 . substr($this->getColumnSyntaxe($column[$key]), 0, -2)
                 . " AUTO_INCREMENT,\n";
        }
        return $autoIncrement;
    }