Tariff
fun Tariff(id: String, partyId: String, currency: String, countryCode: String, type: String, tariffAltText: List<DisplayText> = emptyList(), tariffAltUrl: List<String> = emptyList(), minPrice: Price? = null, maxPrice: Price? = null, elements: List<TariffElement> = emptyList(), startDateTime: Date? = null, endDateTime: Date? = null, lastUpdated: Date): Tariff