Latte\Runtime\Filters::convertTo PHP Method

    public static function convertTo(FilterInfo $info, $dest, $s)
    {
        $source = $info->contentType ?: Engine::CONTENT_TEXT;
        if ($source === $dest) {
            return $s;
        } elseif ($conv = self::getConvertor($source, $dest)) {
            $info->contentType = $dest;
            return $conv($s);
        } else {
            trigger_error("Filters: unable to convert content type " . strtoupper($source) . " to " . strtoupper($dest), E_USER_WARNING);
            return $s;
        }
    }