League\CommonMark\Environment::getConfig PHP Method

    public function getConfig($key = null, $default = null)
    {
        return $this->config->getConfig($key, $default);
    }

 /**
  * @param string     $option
  * @param mixed|null $default
  *
  * @return mixed|null
  */
 public function getOption($option, $default = null)
 {
     return $this->environment->getConfig('renderer/' . $option, $default);
 }