DmitryDulepov\Realurl\Encoder\UrlEncoder::initializeUrlPrepend PHP Метод

    protected function initializeUrlPrepend()
    {
        $configuration = $this->configuration->get('domains');
        if (is_array($configuration)) {
            if (isset($configuration['GETvar'])) {
                $getVarName = $configuration['GETvar'];
                if (isset($configuration['urlPrepend']) && $configuration['urlPrepend']) {
                    $this->urlPrepend = $configuration['urlPrepend'];
                    // Note: version 1.x unsets the var if 'useConfiguration' is set
                    // However it makes more sense to unset the var if 'urlPrepend' is set
                    // because 'urlPrepend' is typically used for language-based domains.
                    // But 'useConfiguration' can be used to localize postVarSet segment
                    // values. So we change the behavior here comparing to 1.x.
                    unset($this->urlParameters[$getVarName]);
                }
            }
        }
    }