public function clean_up()
{
do_action('apple_news_before_clean_up');
delete_post_meta($this->content_id, self::JSON_META_KEY);
delete_post_meta($this->content_id, self::BUNDLE_META_KEY);
delete_post_meta($this->content_id, self::ERRORS_META_KEY);
do_action('apple_news_after_clean_up');
}