Fragen\GitHub_Updater\Messages::create_error_message PHP Method

    public function create_error_message($type = '')
    {
        global $pagenow;
        $update_pages = array('update-core.php', 'plugins.php', 'themes.php');
        $settings_pages = array('settings.php', 'options-general.php');
        if (!in_array($pagenow, array_merge($update_pages, $settings_pages)) || in_array($pagenow, $settings_pages) && (!isset($_GET['page']) || 'github-updater' !== $_GET['page'])) {
            return false;
        }
        if (is_admin() && !parent::is_doing_ajax()) {
            switch ($type) {
                case is_wp_error($type):
                    self::$error_message = $type->get_error_message();
                    if (false !== strstr(self::$error_message, 'timed out')) {
                        break;
                    }
                    add_action('admin_notices', array(&$this, 'show_wp_error'));
                    add_action('network_admin_notices', array(&$this, 'show_wp_error'));
                    break;
                case 'gitlab':
                    add_action('admin_notices', array(&$this, 'gitlab_error'));
                    add_action('network_admin_notices', array(&$this, 'gitlab_error'));
                case 'git':
                default:
                    add_action('admin_notices', array(&$this, 'show_403_error_message'));
                    add_action('network_admin_notices', array(&$this, 'show_403_error_message'));
                    add_action('admin_notices', array(&$this, 'show_401_error_message'));
                    add_action('network_admin_notices', array(&$this, 'show_401_error_message'));
            }
        }
        return true;
    }