public static Product Create(string name, long consumption, ICostsCalculator calculator)
{
var product = new Product(name, consumption, calculator);
product.AnnualCosts = product.CalculateAnnualCosts();
return(product);
}
private Product(string tariffName, long consumption, ICostsCalculator calculatioModel)
{
TariffName = tariffName;
_consumption = consumption;
_calculator = calculatioModel;
}