I'm a customer using the storefront API. I have created the API for creating the checkout object and then adding variants to that checkout object. When I go to the weburl specified by the checkout I want a way for the user to come back to my website. Currently, the only way to get back is to press the back button on the browser or click on the banner in the checkout page.
When we create a cart item using the website created by the builder I see a cart link in the breadcrumb. However, there is no cart object in Shopify. The only way is to have a checkout object and pass variants to it. Can we specify to the checkout object that there is a cart and we need to get back to our website.
The API currently assumes there is no cart and that you are going for buy it now.