public Salesperson(string lastName, string firstName)
 {
     _citiesVisited = new List <string>();
     _currentStock  = new WidgetItemStock();
     _lastName      = lastName;
     _firstName     = firstName;
 }
 public Salesperson()
 {
     _citiesVisited = new List <string>();
     _currentStock  = new WidgetItemStock();
 }