public static GroupMailboxLocator Instantiate(IRecipientSession adSession, ADUser adUser)
        {
            GroupMailboxLocator groupMailboxLocator = new GroupMailboxLocator(adSession);

            groupMailboxLocator.InitializeFromAd(adUser);
            return(groupMailboxLocator);
        }
        public static GroupMailboxLocator Instantiate(IRecipientSession adSession, ProxyAddress proxyAddress)
        {
            GroupMailboxLocator groupMailboxLocator = new GroupMailboxLocator(adSession);

            groupMailboxLocator.InitializeFromAd(proxyAddress);
            return(groupMailboxLocator);
        }