private function validateAlias(\DOMElement $alias, $file)
    {
        foreach ($alias->attributes as $name => $node) {
            if (!\in_array($name, ['alias', 'id', 'public'])) {
                throw new InvalidArgumentException(sprintf('Invalid attribute "%s" defined for alias "%s" in "%s".', $name, $alias->getAttribute('id'), $file));
            }
        }

        foreach ($alias->childNodes as $child) {
            if (!$child instanceof \DOMElement || self::NS !== $child->namespaceURI) {
                continue;
            }
            if (!\in_array($child->localName, ['deprecated'], true)) {
                throw new InvalidArgumentException(sprintf('Invalid child element "%s" defined for alias "%s" in "%s".', $child->localName, $alias->getAttribute('id'), $file));
            }
        }
    }