private function getTaxonomyWeights()
    {
        $taxonomies = [];

        if (isset($this->contenttype['taxonomy'])) {
            foreach ($this->contenttype['taxonomy'] as $key) {
                if ($this->app['config']->get('taxonomy/' . $key . '/behaves_like') === 'tags') {
                    $taxonomies[$key] = $this->app['config']->get('taxonomy/' . $key . '/searchweight', 75);
                }
            }
        }

        return $taxonomies;
    }