InitialData

interface InitialData {    defaultLanguage: LanguageCode;    defaultZone: string;    roles?: RoleDefinition[];    countries: CountryDefinition[];    taxRates: Array<{ name: string; percentage: number }>;    shippingMethods: Array<{ name: string; price: number; taxRate?: number }>;    paymentMethods: Array<{ name: string; handler: ConfigurableOperationInput }>;    collections: CollectionDefinition[];}