System.Security.Permissions.FileIOPermission.AddPathList C# (CSharp) Method

        public void AddPathList(FileIOPermissionAccess access, string path) { }
        public void AddPathList(FileIOPermissionAccess access, string[] pathList) { }

        private AppDomain CreateAnalyzerDomain()
        {
            AppDomainSetup ads = new AppDomainSetup();
            AppDomain result;
            PermissionSet perms;
            ads.ApplicationBase = Environment.CurrentDirectory;
            ads.ShadowCopyDirectories = "shadow";
            ads.ShadowCopyFiles = "shadow";
            ads.DisallowCodeDownload = true;

            perms = new PermissionSet(PermissionState.None);
            FileIOPermission fiop = new FileIOPermission(PermissionState.Unrestricted);
            perms.AddPermission(new SecurityPermission(SecurityPermissionFlag.Execution));
            perms.AddPermission(new SecurityPermission(SecurityPermissionFlag.AllFlags));
            fiop.AddPathList(FileIOPermissionAccess.PathDiscovery, Environment.CurrentDirectory);
            fiop.AddPathList(FileIOPermissionAccess.Read, Environment.CurrentDirectory);
            fiop.AddPathList(FileIOPermissionAccess.PathDiscovery, Environment.CurrentDirectory + "Extensions\\");
            fiop.AddPathList(FileIOPermissionAccess.Read, Environment.CurrentDirectory + "Extensions\\");
            //fiop.AllLocalFiles = FileIOPermissionAccess.AllAccess
            //fiop.AllFiles = FileIOPermissionAccess.AllAccess
            perms.AddPermission(fiop);
            perms.AddPermission(new UIPermission(UIPermissionWindow.AllWindows, UIPermissionClipboard.OwnClipboard));
            perms.AddPermission(new ReflectionPermission(PermissionState.Unrestricted));

            PolicyLevel policy = PolicyLevel.CreateAppDomainLevel();
            policy.RootCodeGroup.PolicyStatement = new PolicyStatement(perms);

            // create the Domain
            result = AppDomain.CreateDomain("analyzer", null, ads);
            result.SetAppDomainPolicy(policy);
            return result;
        }