public function saveLinks($data)
    {
        if (isset($data['_links'])) {
            foreach ($data['_links'] as $rel => $link) {
                if (!in_array($rel, $this->registered_link_relations)
                    && $rel != 'curies'
                    && $rel.'/' != static::LINK_RELATIONSHIPS_BASE_URI) {
                    $this->links[$rel] = $link['href'];
                }
            }
        } else if (isset($data['links'])) {
            foreach ($data['links'] as $link) {
                foreach ($link['rel'] as $rel) {
                    if (!in_array($rel, $this->registered_link_relations)
                        && $rel.'/' != static::LINK_RELATIONSHIPS_BASE_URI) {
                        $this->links[$rel] = $link['href'];
                    }
                }
            }
        }
    }