System.Security.AccessControl.MutexSecurity.AddAccessRule C# (CSharp) Method

        public void AddAccessRule(MutexAccessRule rule)
        {
            base.AddAccessRule(rule);
        }

        public static Mutex GrabMutex(string name)
        {
            var mutexName = "kalixLuceneSegmentMutex_" + name;
            try
            {
                return Mutex.OpenExisting(mutexName);
            }
            catch (WaitHandleCannotBeOpenedException)
            {
                var worldSid = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
                var security = new MutexSecurity();
                var rule = new MutexAccessRule(worldSid, MutexRights.FullControl, AccessControlType.Allow);
                security.AddAccessRule(rule);
                var mutexIsNew = false;
                return new Mutex(false, mutexName, out mutexIsNew, security);
            }
            catch (UnauthorizedAccessException)
            {
                var m = Mutex.OpenExisting(mutexName, MutexRights.ReadPermissions | MutexRights.ChangePermissions);
                var security = m.GetAccessControl();
                var user = Environment.UserDomainName + "\\" + Environment.UserName;
                var rule = new MutexAccessRule(user, MutexRights.Synchronize | MutexRights.Modify, AccessControlType.Allow);
                security.AddAccessRule(rule);
                m.SetAccessControl(security);

                return Mutex.OpenExisting(mutexName);
            }
        }