ZeroInstall.DesktopIntegration.IntegrationManager.AddAccessPointsInternal C# (CSharp) Method

        protected override void AddAccessPointsInternal(AppEntry appEntry, Feed feed, IEnumerable<AccessPoint> accessPoints)
        {
            #region Sanity checks
            if (appEntry == null) throw new ArgumentNullException(nameof(appEntry));
            if (feed == null) throw new ArgumentNullException(nameof(feed));
            if (accessPoints == null) throw new ArgumentNullException(nameof(accessPoints));
            if (appEntry.AccessPoints != null && ReferenceEquals(appEntry.AccessPoints.Entries, accessPoints)) throw new ArgumentException("Must not be equal to appEntry.AccessPoints.Entries", nameof(accessPoints));
            #endregion

            // Skip entries with mismatching hostname
            if (appEntry.Hostname != null && !Regex.IsMatch(Environment.MachineName, appEntry.Hostname)) return;

            if (appEntry.AccessPoints == null) appEntry.AccessPoints = new AccessPointList();

            AppList.CheckForConflicts(accessPoints, appEntry);

            accessPoints.ApplyWithRollback(
                accessPoint => accessPoint.Apply(appEntry, feed, Handler, MachineWide),
                accessPoint =>
                {
                    // Don't perform rollback if the access point was already applied previously and this was only a refresh
                    if (!appEntry.AccessPoints.Entries.Contains(accessPoint))
                        accessPoint.Unapply(appEntry, MachineWide);
                });

            appEntry.AccessPoints.Entries.RemoveRange(accessPoints); // Replace pre-existing entries
            appEntry.AccessPoints.Entries.AddRange(accessPoints);
            appEntry.Timestamp = DateTime.UtcNow;
        }