Microsoft.Azure.Amqp.DuplexAmqpLink.DuplexAmqpLink C# (CSharp) Method

        public DuplexAmqpLink(AmqpSession session, AmqpLinkSettings settings)
            : base("duplex")
        {
            AmqpTrace.Provider.AmqpLogOperationInformational(this, TraceOperation.Create, "Create");

            var senderSettings = new AmqpLinkSettings
            {
                Role = false,
                LinkName = settings.LinkName + ":out",
                SettleType = settings.SettleType,
                Source = new Source(),
                TotalLinkCredit = settings.TotalLinkCredit,
                AutoSendFlow = settings.AutoSendFlow,
                Target = settings.Target,
                Properties = settings.Properties
            };
            this.sender = new SendingAmqpLink(session, senderSettings);

            var receiverSettings = new AmqpLinkSettings
            {
                Role = true,
                LinkName = settings.LinkName + ":in",
                SettleType = settings.SettleType,
                Source = settings.Source,
                TotalLinkCredit = settings.TotalLinkCredit,
                AutoSendFlow = settings.AutoSendFlow,
                Target = new Target(),
                Properties = settings.Properties
            };
            this.receiver = new ReceivingAmqpLink(session, receiverSettings);
            this.receiver.SetTotalLinkCredit(receiverSettings.TotalLinkCredit, true); // WHY set both here AND on settings? Follow up with Xin.

            this.sender.SafeAddClosed(this.OnLinkClosed);
            this.receiver.SafeAddClosed(this.OnLinkClosed);
        }