return apply_filters('wp_sendgrid_get_local_settings', $settings);
    }
    private static function get_network_settings()
    {
        $settings = get_site_option(self::SETTINGS_NETWORK_OPTION_NAME, array());
        $settings = array_merge(self::get_default_network_settings(), $settings);
        return apply_filters('wp_sendgrid_get_network_settings', $settings);
    }
    private static function is_network_admin_page()
    {
        return defined('WP_NETWORK_ADMIN') && WP_NETWORK_ADMIN == 1;
    }
    public static function update_network_options()
    {
        // Only make changes if the self::SETTINGS_OPTION_NAME key exists.
        //  Note: we use the SETTINGS_OPTION_NAME because it is used by files in the '/views' folder
        if (isset($_REQUEST[self::SETTINGS_OPTION_NAME])) {
            $value = stripslashes_deep($_REQUEST[self::SETTINGS_OPTION_NAME]);
            // Since a false value from the override checkbox won't be saved, we need to add it here.
            $_REQUEST[self::SETTINGS_OPTION_NAME]['override'] = isset($_REQUEST[self::SETTINGS_OPTION_NAME]['override']);
            // Update the network option.
            update_site_option(self::SETTINGS_NETWORK_OPTION_NAME, $_REQUEST[self::SETTINGS_OPTION_NAME]);
            // Redirect back to the network settings page.
            $params = array('page' => self::SETTINGS_PAGE_SLUG, 'settings-updated' => 'true');
            wp_redirect(add_query_arg($params, network_admin_url('settings.php')));
            exit;
        }
    }
}
WP_SendGrid_Settings::start();