/**
* Get WC_WooTax_Order object
*
* @param (int) $order_id ID of WooCommerce order to load
*/
public static function get_order($order_id = -1)
{
if (is_null(self::$order_instance)) {
self::$order_instance = new WC_WooTax_Order();
}
if (self::$order_instance->order_id != $order_id) {
self::$order_instance->load($order_id);
}
return self::$order_instance;
}
