I'm trying to create an order history page and a feature that allows shopify customer to see the details of the orders that can be transitioned from order history page.
So, I found storefront API field of customer orders for `Query.Customer.OrderConnection.Edges.Node#customerUrl` and got feature of see the details of the orders too.
But I have a question about "Why Orders#customerUrl is nullable?" and "When Orders#customerUrl to null?".
Can anyone answer about these questions?
`Query.Customer.OrderConnection.Edges.Node#customerUrl` is referenced here.
> customerUrl (URL)
> The unique URL that the customer can use to access the order.
Thank you.
