I'm trying to build a discount app which gives free shipping on a certain shipping method when items with a certain tag are in the cart using shopify functions/shipping discount api. Currently, I received a cart.deliveryGroups.deliveryOptions.handle from on function input: "deliveryOptions": [ { "handle": "16c3896838b1c095431f263d073856c9-73a2bf35e295daaa5f6254f4ae9788b8", "title": "Standard", "code": "Standard", "deliveryMethodType": "SHIPPING", "description": "" }, And I applied a discount using discout.targets.deliveryOption.handle and it works great because I basically hardcoded handle variable in my code. Questions is how can I query what deliveryOptions handles are available via admin API when I built UI for my app? I want user in admin ui be able to select which shipping method to make free, and in order to do that i need shipping method handle(or at least i think i need that, maybe it's done some other way)? Tried reading docs, but i can't find connection between admin api and shippin discount functions api.