private void UpdateDisplayNames(PrivacyWrapper sub)
        {
            userMapping.Clear();
            sub.UpdateDisplayNames(userMapping);

            blackList.Clear();
            var updatedBlacklist = WrapBlackList(Globals.conversationDetails.blacklist);
            foreach (var user in updatedBlacklist)
            {
                blackList.Add(user);
            }
        }
        private List<PrivacyWrapper> WrapSubmissions(List<TargettedSubmission> submissions)
        {
            var privateSubmissions = new List<PrivacyWrapper>();

            foreach (var sub in submissions)
            {
                var privSub = new PrivacyWrapper(sub, userMapping);
                privateSubmissions.Add(privSub);
            }

            return privateSubmissions;
        }