public function registerConnectionString(ConnectionStringInterface $connString, $driverName)
    {
        $this->connectionStrings[$driverName] = $connString;
        if (!in_array($driverName, $this->availableDrivers)) {
            $this->availableDrivers[] = $driverName;
        }
        $this->error->setMessage(null);
        $this->__buildConfig($this->rawConfig);
        $connString->setConfig($this);
    }