returnApproveRequest
Approves a customer's return request.
If this mutation is successful, then the `Return.status` field of the
approved return is set to `OPEN`.
returnCancel
Cancels a return and restores the items back to being fulfilled.
Canceling a return is only available before any work has been done
on the return (such as an inspection or refund).
returnClose
Indicates a return is complete, either when a refund has been made and items restocked,
or simply when it has been marked as returned in the system.
returnDeclineRequest
Declines a return on an order.
When a return is declined, each `ReturnLineItem.fulfillmentLineItem` can be associated to a new return.
Use the `ReturnCreate` or `ReturnRequest` mutation to initiate a new return.
returnRequest
A customer's return request that hasn't been approved or declined.
This mutation sets the value of the `Return.status` field to `REQUESTED`.
To create a return that has the `Return.status` field set to `OPEN`, use the `returnCreate` mutation.