"properties should not be accessed directly" issue during WooCommerce 3.0 checkout

PHP Snippet 1:

    $OrderID= ( WC()->version < '2.7.0' ) ? $order->id : $order->get_id();
    $shipping_country   = (  WC()->version < '2.7.0' ) ? $order->shipping_country : $order->get_shipping_country();