action rebilly_get_subscription_upcoming_invoice_collection {
  label: "Retrieve subscription order's upcoming invoice"
  description: "Retrieve an upcoming invoice from the specified subscription order.\nThe endpoint is temporary before upcoming invoices get a complete integration.\n"
  provider: rebilly
  method: GET
  path: "/subscriptions/{id}/upcoming-invoices"
  encoding: json
  output: {
    type: "array"
    items: {
      type: "object"
    }
  }
}