public void CalculatePrice(IProcessExecutionContext executionContext, IPriceCalculator priceCalculator)
{
var unitPrice = priceCalculator.CalculateUnitPrice(executionContext, this.Fee, this.Quantity);
if (unitPrice != this.UnitPrice)
{
this.UnitPrice = UnitPrice;
this.TotalPrice = this.Quantity * unitPrice;
}
}