public BusinessServiceContract(BusinessEstablishment producer, BusinessEstablishment consumer) : base(producer) { Consumer = consumer; }
public LogisticsServiceContract(BusinessEstablishment producer, Firm consumer) : base(producer) { Consumer = consumer; }
public Contract(BusinessEstablishment producer) { Producer = producer; }
public CommodityContract(BusinessEstablishment producer, BusinessEstablishment consumer) : base(producer) { Consumer = consumer; }