Link structure
Every link available through the LinkDB object is represented as an array
containing the following fields:
id(integer): Unique identifier.title(string): Title of the link.url(string): URL of the link. Used for displayable links (without redirector, url encoding, etc.).
Can be absolute or relative for Notes.real_url(string): Real destination URL, can be redirected, encoded, etc.shorturl(string): Permalink small hash.description(string): Link text description.private(boolean): whether the link is private or not.tags(string): all link tags separated by a single spacethumbnail(string|boolean): relative path of the thumbnail cache file, or false if there isn't any.created(DateTime): link creation date time.updated(DateTime): last modification date time.