1:1 INTERFACE Priced
  2:3 METHOD current_price() -> Money
6:1 CLASS Product @table(name="products", index=[sku])
  7:3 FIELD id: Id
  8:3 FIELD sku: SKU @unique
  9:3 FIELD name: Text
  10:3 FIELD prices: multi Price
  11:3 FIELD owner: ref Customer
  13:3 METHOD current_price() -> Money
    14:5 RETURN latest(self.prices).amount
  17:3 METHOD rename(name: Text)
    18:5 ASSIGN self.name = name
  21:3 METHOD set_price(mut amount: Money)
    22:5 ASSIGN self.prices = amount
  25:3 METHOD adopt(take other: Product) -> Product
    26:5 RETURN other
31:1 CLASS PriceCache @gc
  32:3 FIELD entries: map<SKU, Money>
35:1 TYPE Note
  36:3 FIELD id: Id
  37:3 FIELD body: Text
  38:3 FIELD created: Timestamp = now()
41:1 METHOD discount(mut amount: Money, take pct: Int) -> Money
  42:3 RETURN amount