public static function renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext)
{
$url = GeneralUtility::getIndpEnv('TYPO3_REQUEST_URL');
if (0 !== strpos($url, GeneralUtility::getIndpEnv('TYPO3_SITE_URL'))) {
$url = GeneralUtility::getIndpEnv('TYPO3_SITE_URL') . $url;
}
return $url;
}