public function saveValuelist($slug, $postValues)
    {
        $valuelistObject = ValuelistFactory::createValuelistFromPostValues($postValues);

        $valuelists = $this->repository->valuelists;
        foreach ($valuelists as $key => $valuelist) {
            if ($valuelist->slug == $slug) {
                $valuelists[$key] = $valuelistObject;
            }
        }
        $this->repository->valuelists = $valuelists;
        $this->save();
    }