shortcode->getHandlers()->add('pdf', function (ShortcodeInterface $sc) {
// Get shortcode content and parameters
$str = $sc->getContent();
$pdfurl = $sc->getParameter('url', $sc->getBbCode());
if ($pdfurl) {
$output = '';
return $output;
} else {
if ($str) {
return '';
}
}
});
}
}