/**
* Get all the author IDs a user is subscribed to.
*
* @since 1.0.0
* @param $user_id
* @return mixed|void
*/
public static function subscribed_object_ids($user_id)
{
// Using a "fake" object for PHP 5.2, which doesn't have static method inheritance
$user = new Prompt_User(0);
return $user->_subscribed_object_ids($user_id);
}
