INTERFACE {{p}}if_feed_stock PUBLIC.
  TYPES:
    ty_feed_type TYPE c LENGTH 8,
    ty_unit      TYPE c LENGTH 3,
    ty_quantity  TYPE p LENGTH 13 DECIMALS 3,
    BEGIN OF ty_delivery,
      feed_type TYPE ty_feed_type,
      unit      TYPE ty_unit,
      quantity  TYPE ty_quantity,
    END OF ty_delivery,
    tt_delivery TYPE STANDARD TABLE OF ty_delivery WITH EMPTY KEY,
    BEGIN OF ty_stock,
      feed_type  TYPE ty_feed_type,
      unit       TYPE ty_unit,
      quantity   TYPE ty_quantity,
      deliveries TYPE i,
    END OF ty_stock,
    tt_stock TYPE STANDARD TABLE OF ty_stock WITH EMPTY KEY.

  METHODS consolidate
    IMPORTING it_supplier_a   TYPE tt_delivery
              it_supplier_b   TYPE tt_delivery
    RETURNING VALUE(rt_stock) TYPE tt_stock.

  METHODS quantity_of
    IMPORTING it_stock           TYPE tt_stock
              iv_feed_type       TYPE ty_feed_type
    RETURNING VALUE(rv_quantity) TYPE ty_quantity.

  METHODS top_feed
    IMPORTING it_stock            TYPE tt_stock
    RETURNING VALUE(rv_feed_type) TYPE ty_feed_type.
ENDINTERFACE.