public CreateSaleHandler(ISalesRepository salesRepository, IBusPublisher busPublisher, IAccountingGroupVerifier agVerifier, IUserVerifier userVerifier, IPointOfSaleVerifier posVerifier, IAuthenticationMeansVerifier amVerifier, IProductVerifier productVerifier, IOfferVerifier offerVerifier)
{
_salesRepository = salesRepository ?? throw new ArgumentNullException(nameof(salesRepository));
_busPublisher = busPublisher ?? throw new ArgumentNullException(nameof(busPublisher));
_agVerifier = agVerifier ?? throw new ArgumentNullException(nameof(agVerifier));
_userVerifier = userVerifier ?? throw new ArgumentNullException(nameof(userVerifier));
_posVerifier = posVerifier ?? throw new ArgumentNullException(nameof(posVerifier));
_amVerifier = amVerifier ?? throw new ArgumentNullException(nameof(amVerifier));
_productVerifier = productVerifier ?? throw new ArgumentNullException(nameof(productVerifier));
_offerVerifier = offerVerifier ?? throw new ArgumentNullException(nameof(offerVerifier));
}