public class FunctionAppConfiguration : IFunctionAppConfiguration
{
    public void Build(IFunctionHostBuilder builder)
    {
        builder
            .Setup((serviceCollection, commandRegistry) =>
            {
                serviceCollection
                    .AddLogging()
                    .AddNotificationServices(commandRegistry)
                    .AddExpensesService(commandRegistry)
                    .AddInvoiceServices(commandRegistry);
            })
            .Authorization(authorization => authorization.TokenValidator())
            .AddFluentValidation()
            .Functions(functions => functions
                .HttpRoute("v1/Invoice", route => route
                    .HttpFunction(AuthorizationTypeEnum.TokenValidation, HttpMethod.Get)
                )
                .ServiceBus("serviceBusConnection", serviceBus => serviceBus
                    .SubscriptionFunction("emaildispatchtopic", "emaildispatchsubscription"))
                .Storage("storageConnectionString", storage => storage
                    .BlobFunction("expenses/{name}"))
            );
    }
}