protected function getExtraConnection($conn)
    {
        $dbConfigs = $this->containers['config']->get('mysql');
        $dbConfig = $dbConfigs[$conn];
        $this->extraConfigs[$conn]['_db'] = $dbConfig['dbname'] ?? '';
        $this->extraConfigs[$conn]['_host'] = $dbConfig['host'] ?? '';
        $this->extraConfigs[$conn]['_username'] = $dbConfig['username'] ?? '';
        $this->extraConfigs[$conn]['_password'] = $dbConfig['password'] ?? '';
        $this->extraConfigs[$conn]['_options'] = $dbConfig['options'] ?? '';
        $this->getDsn($conn);
        $this->getConnection($conn);
    }