INTERFACE {{p}}if_studio_pricer PUBLIC.
  TYPES ty_room   TYPE c LENGTH 1.
  TYPES ty_amount TYPE p LENGTH 8 DECIMALS 2.
  CONSTANTS:
    BEGIN OF c_room,
      a TYPE ty_room VALUE 'A',
      b TYPE ty_room VALUE 'B',
      c TYPE ty_room VALUE 'C',
    END OF c_room.
  METHODS calculate
    IMPORTING iv_room        TYPE ty_room
              iv_minutes     TYPE i
              iv_bookings    TYPE i
    RETURNING VALUE(rv_price) TYPE ty_amount.
ENDINTERFACE.