Flexfields for Lines REST Endpoints

Purchase Orders/Lines/Flexfields for Lines
The operations from the Purchase Orders/Lines/Flexfields for Lines category.
Get all descriptive flexfields
Method: get
Path: /fscmRestApi/resources/11.13.18.05/purchaseOrders/{purchaseOrdersUniqID}/child/lines/{POLineId}/child/DFF
Get one descriptive flexfield not supported
Method: get
Path: /fscmRestApi/resources/11.13.18.05/purchaseOrders/{purchaseOrdersUniqID}/child/lines/{POLineId}/child/DFF/{PoLineId}