public ResponseClass DeserializeCompositeDiscount(Guid sessionID, Guid storeID, Guid discountLeftID, Guid discountRightID, string boolOperator)
{
string jsonAnswer = marketFacade.ComposeTwoDiscounts(
sessionID, storeID, discountLeftID, discountRightID, boolOperator);
ResponseClass response = JsonConvert.DeserializeObject <ResponseClass>(jsonAnswer);
return(response);
}