src/M6Web/Component/Redis/Manager.php
public function getServerConfig($servername = null)
    {
        if (is_null($servername)) {
            return $this->serverConfig;
        } else {
            return $this->serverConfig[$servername];
        }
    }
public function getServerConfig($servername = null)
    {
        if (is_null($servername)) {
            return $this->serverConfig;
        } else {
            return $this->serverConfig[$servername];
        }
    }
get the server info against servernam or all the config
@param int $servername clé

@return array