EventBuilder::prepareRelations

protected function prepareRelations($relations): ?Relations
{
	if (!isset($relations))
	{
		return null;
	}

	$relations = is_string($relations)
		? unserialize($relations, ['allowed_classes' => false])
		: $relations
	;

	if ($relations && !empty($relations['COMMENT_XML_ID']))
	{
		return (new Relations($relations['COMMENT_XML_ID']));
	}

	return null;
}