How do I query Order.Returns.ReturnLineItems when it is ReturnLineItemType instead of ReturnLineItem

I ended up finding the solution:

ReturnLineItems struct {
				Nodes []struct {
					ReturnLineItem struct {
						RefundableQuantity  int64
						RefundedQuantity    int64
						ReturnReason        string
						ReturnReasonNote    string
						CustomerNote        string
						Quantity            int64
						FulfillmentLineItem struct {
							LineItem struct {
								Name string
								SKU  string
							}
						}
					} `graphql:"... on ReturnLineItem"`
				}
			} `graphql:"returnLineItems(first: 25)"`