/// <summary>
        /// Initializes the specified loyalty cards.
        /// </summary>
        /// <param name="loyaltyCards">The loyalty cards.</param>
        public virtual void Initialize(IEnumerable<LoyaltyCard> loyaltyCards)
        {
            Assert.ArgumentNotNull(loyaltyCards, "loyaltyCards");

            foreach (var card in loyaltyCards)
            {
                var result = new LoyaltyCardItemJsonResult();
                result.Initialize(card);
                this.LoyaltyCards.Add(result);
            }
        }
        /// <summary>
        /// Initializes the specified loyalty cards.
        /// </summary>
        /// <param name="loyaltyCards">The loyalty cards.</param>
        public virtual void Initialize(IEnumerable <LoyaltyCard> loyaltyCards)
        {
            Assert.ArgumentNotNull(loyaltyCards, "loyaltyCards");

            foreach (var card in loyaltyCards)
            {
                var result = new LoyaltyCardItemJsonResult();
                result.Initialize(card);
                this.LoyaltyCards.Add(result);
            }
        }