SevenSoftware.Windows.InstanceAwareApplication.ExtractParameters C# (CSharp) Method

        static void ExtractParameters(
            ApplicationInstanceAwareness awareness, out string prefix, out IdentityReference identity)
        {
            new SecurityPermission(SecurityPermissionFlag.ControlPrincipal).Assert();
            WindowsIdentity currentIdentity = WindowsIdentity.GetCurrent();

            if (currentIdentity == null)
            {
                throw new Exception("Unable to retrieve current identity");
            }

            if (awareness == ApplicationInstanceAwareness.Host && currentIdentity.Groups != null)
            {
                prefix = GlobalPrefix;
                identity =
                    currentIdentity.Groups.FirstOrDefault(
                        reference => reference.Translate(typeof(SecurityIdentifier)).Value.Equals(UsersSidValue));
            }
            else
            {
                prefix = LocalPrefix;
                identity = currentIdentity.User;
            }

            CodeAccessPermission.RevertAssert();

            if (identity == null)
            {
                throw new Exception(
                    "Could not determine a proper identity to create synchronization objects access rules");
            }
        }