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+# Domain Model
+
+## SupermarketShopper class
+
+### alt1
+| Method           | Member Variables | Scenario | Result |
+|------------------|------------------|----------|--------|
+| searchForItem()  |                  |          |        |
+| getItemPrice()   |                  |          |        |
+| calculateTotal() |                  |          |        |
+|                  |                  |          |        |
+
+### alt2
+| Classes              | Methods                                   | Scenario       | Outputs       |
+|----------------------|-------------------------------------------|----------------|---------------|
+| checkoutClass        | searchForItem(int ID, List<String> items) | If in list     | true          |
+|                      |                                           | If not in list | false         |
+|                      | getItemPrice(int ID)                      | If             | int price     |
+|                      |                                           |                |               |
+|                      | calculateTotal(List<int> prices)          |                | int total     |
+| shoppingHistoryClass | formatRecipt(List<String> items)          |                | string recipt |