public PosEvent()
 {
     this.promoField = new PosEventPromo();
     this.compField = new PosEventComp();
     this.paymentField = new PosEventPayment();
     this.deletedField = new PosEventDeleted();
     this.itemField = new List<PosEventItem>();
     this.employeeField = new PosEventEmployee();
 }
 public PosEvent(string eventName, int terminalId, PosEventEmployee employee, PosEventComp comp)
     : this(eventName, terminalId, employee)
 {
     Comp = comp;
 }