InformationExpert. Interactor with method

CartInteractor.kt

class CartInteractor(
  private val cartRepository: CartRepository
) {
 
  fun getCart() : Cart {
    return cartRepository.getCart()
  }
  
  fun getApproximatePriceOfProducts(cart: Cart): BigDecimal {
    return cart.products.sumOf{ it.price }
  }
}