public function loadStickyAttributes()
    {
        $stickyAttributes = $this->stickyAttributes();
        $path = $this->getStickyDataFile();
        if (is_file($path)) {
            $result = json_decode(file_get_contents($path), true);
            if (is_array($result)) {
                foreach ($stickyAttributes as $name) {
                    if (isset($result[$name])) {
                        $this->$name = $result[$name];
                    }
                }
            }
        }
    }