public function check_update($_, $assoc_args)
{
$updates = $this->get_updates($assoc_args);
if ($updates) {
$formatter = new \WP_CLI\Formatter($assoc_args, array('version', 'update_type', 'package_url'));
$formatter->display_items($updates);
} else {
if (empty($assoc_args['format']) || 'table' == $assoc_args['format']) {
$update_type = $this->get_update_type_str($assoc_args);
WP_CLI::success("WP-CLI is at the latest{$update_type}version.");
}
}
}