diff --git a/modules/identity/src/Volo.Abp.PermissionManagement.Domain.Identity/Volo/Abp/PermissionManagement/Identity/RoleResourcePermissionProviderKeyLookupService.cs b/modules/identity/src/Volo.Abp.PermissionManagement.Domain.Identity/Volo/Abp/PermissionManagement/Identity/RoleResourcePermissionProviderKeyLookupService.cs
index ab1824e13d..d305889e4e 100644
--- a/modules/identity/src/Volo.Abp.PermissionManagement.Domain.Identity/Volo/Abp/PermissionManagement/Identity/RoleResourcePermissionProviderKeyLookupService.cs
+++ b/modules/identity/src/Volo.Abp.PermissionManagement.Domain.Identity/Volo/Abp/PermissionManagement/Identity/RoleResourcePermissionProviderKeyLookupService.cs
@@ -24,6 +24,11 @@ public class RoleResourcePermissionProviderKeyLookupService : IResourcePermissio
         DisplayName = LocalizableString.Create<IdentityResource>(nameof(RoleResourcePermissionProviderKeyLookupService));
     }
 
+    public virtual Task<bool> IsAvailableAsync()
+    {
+        return Task.FromResult(true);
+    }
+
     public virtual async Task<List<ResourcePermissionProviderKeyInfo>> SearchAsync(string filter = null, int page = 1, CancellationToken cancellationToken = default)
     {
         var roles = await UserRoleFinder.SearchRoleAsync(filter, page);
diff --git a/modules/identity/src/Volo.Abp.PermissionManagement.Domain.Identity/Volo/Abp/PermissionManagement/Identity/UserResourcePermissionProviderKeyLookupService.cs b/modules/identity/src/Volo.Abp.PermissionManagement.Domain.Identity/Volo/Abp/PermissionManagement/Identity/UserResourcePermissionProviderKeyLookupService.cs
index 83f0e79099..3fd5cd0643 100644
--- a/modules/identity/src/Volo.Abp.PermissionManagement.Domain.Identity/Volo/Abp/PermissionManagement/Identity/UserResourcePermissionProviderKeyLookupService.cs
+++ b/modules/identity/src/Volo.Abp.PermissionManagement.Domain.Identity/Volo/Abp/PermissionManagement/Identity/UserResourcePermissionProviderKeyLookupService.cs
@@ -25,6 +25,11 @@ public class UserResourcePermissionProviderKeyLookupService : IResourcePermissio
         DisplayName = LocalizableString.Create<IdentityResource>(nameof(UserResourcePermissionProviderKeyLookupService));
     }
 
+    public virtual Task<bool> IsAvailableAsync()
+    {
+        return Task.FromResult(true);
+    }
+
     public virtual async Task<List<ResourcePermissionProviderKeyInfo>> SearchAsync(string filter = null, int page = 1, CancellationToken cancellationToken = default)
     {
         var users = await UserRoleFinder.SearchUserAsync(filter, page);
diff --git a/modules/identityserver/src/Volo.Abp.PermissionManagement.Domain.IdentityServer/Volo/Abp/PermissionManagement/IdentityServer/ClientResourcePermissionManagementProvider.cs b/modules/identityserver/src/Volo.Abp.PermissionManagement.Domain.IdentityServer/Volo/Abp/PermissionManagement/IdentityServer/ClientResourcePermissionManagementProvider.cs
index 9285742131..cca3333d22 100644
--- a/modules/identityserver/src/Volo.Abp.PermissionManagement.Domain.IdentityServer/Volo/Abp/PermissionManagement/IdentityServer/ClientResourcePermissionManagementProvider.cs
+++ b/modules/identityserver/src/Volo.Abp.PermissionManagement.Domain.IdentityServer/Volo/Abp/PermissionManagement/IdentityServer/ClientResourcePermissionManagementProvider.cs
@@ -20,6 +20,11 @@ public class ClientResourcePermissionManagementProvider : ResourcePermissionMana
     {
     }
 
+    public override Task<bool> IsAvailableAsync()
+    {
+        return Task.FromResult(CurrentTenant.Id == null);
+    }
+
     public override Task<ResourcePermissionValueProviderGrantInfo> CheckAsync(string name, string resourceName, string resourceKey, string providerName, string providerKey)
     {
         using (CurrentTenant.Change(null))
diff --git a/modules/identityserver/src/Volo.Abp.PermissionManagement.Domain.IdentityServer/Volo/Abp/PermissionManagement/IdentityServer/ClientResourcePermissionProviderKeyLookupService.cs b/modules/identityserver/src/Volo.Abp.PermissionManagement.Domain.IdentityServer/Volo/Abp/PermissionManagement/IdentityServer/ClientResourcePermissionProviderKeyLookupService.cs
index 7fc813dabb..8c3df13c4c 100644
--- a/modules/identityserver/src/Volo.Abp.PermissionManagement.Domain.IdentityServer/Volo/Abp/PermissionManagement/IdentityServer/ClientResourcePermissionProviderKeyLookupService.cs
+++ b/modules/identityserver/src/Volo.Abp.PermissionManagement.Domain.IdentityServer/Volo/Abp/PermissionManagement/IdentityServer/ClientResourcePermissionProviderKeyLookupService.cs
@@ -8,6 +8,7 @@ using Volo.Abp.DependencyInjection;
 using Volo.Abp.IdentityServer.Clients;
 using Volo.Abp.IdentityServer.Localization;
 using Volo.Abp.Localization;
+using Volo.Abp.MultiTenancy;
 
 namespace Volo.Abp.PermissionManagement.IdentityServer;
 
@@ -19,12 +20,22 @@ public class ClientResourcePermissionProviderKeyLookupService : IResourcePermiss
 
     protected IClientFinder ClientFinder { get; }
 
-    public ClientResourcePermissionProviderKeyLookupService(IClientFinder clientFinder)
+    protected ICurrentTenant CurrentTenant { get; }
+
+    public ClientResourcePermissionProviderKeyLookupService(
+        IClientFinder clientFinder,
+        ICurrentTenant currentTenant)
     {
         ClientFinder = clientFinder;
+        CurrentTenant = currentTenant;
         DisplayName = LocalizableString.Create<AbpIdentityServerResource>(nameof(ClientResourcePermissionProviderKeyLookupService));
     }
 
+    public virtual Task<bool> IsAvailableAsync()
+    {
+        return Task.FromResult(CurrentTenant.Id == null);
+    }
+
     public virtual async Task<List<ResourcePermissionProviderKeyInfo>> SearchAsync(string filter = null, int page = 1, CancellationToken cancellationToken = default)
     {
         var clients = await ClientFinder.SearchAsync(filter, page);
diff --git a/modules/openiddict/src/Volo.Abp.PermissionManagement.Domain.OpenIddict/Volo/Abp/PermissionManagement/OpenIddict/ApplicationResourcePermissionManagementProvider.cs b/modules/openiddict/src/Volo.Abp.PermissionManagement.Domain.OpenIddict/Volo/Abp/PermissionManagement/OpenIddict/ApplicationResourcePermissionManagementProvider.cs
index e12fa63d03..4f2094c24c 100644
--- a/modules/openiddict/src/Volo.Abp.PermissionManagement.Domain.OpenIddict/Volo/Abp/PermissionManagement/OpenIddict/ApplicationResourcePermissionManagementProvider.cs
+++ b/modules/openiddict/src/Volo.Abp.PermissionManagement.Domain.OpenIddict/Volo/Abp/PermissionManagement/OpenIddict/ApplicationResourcePermissionManagementProvider.cs
@@ -17,6 +17,11 @@ public class ApplicationResourcePermissionManagementProvider : ResourcePermissio
     {
     }
 
+    public override Task<bool> IsAvailableAsync()
+    {
+        return Task.FromResult(CurrentTenant.Id == null);
+    }
+
     public override Task<ResourcePermissionValueProviderGrantInfo> CheckAsync(string name, string resourceName, string resourceKey, string providerName, string providerKey)
     {
         using (CurrentTenant.Change(null))
diff --git a/modules/openiddict/src/Volo.Abp.PermissionManagement.Domain.OpenIddict/Volo/Abp/PermissionManagement/OpenIddict/ApplicationResourcePermissionProviderKeyLookupService.cs b/modules/openiddict/src/Volo.Abp.PermissionManagement.Domain.OpenIddict/Volo/Abp/PermissionManagement/OpenIddict/ApplicationResourcePermissionProviderKeyLookupService.cs
index 1423ca9768..31e42ffcd5 100644
--- a/modules/openiddict/src/Volo.Abp.PermissionManagement.Domain.OpenIddict/Volo/Abp/PermissionManagement/OpenIddict/ApplicationResourcePermissionProviderKeyLookupService.cs
+++ b/modules/openiddict/src/Volo.Abp.PermissionManagement.Domain.OpenIddict/Volo/Abp/PermissionManagement/OpenIddict/ApplicationResourcePermissionProviderKeyLookupService.cs
@@ -6,6 +6,7 @@ using System.Threading.Tasks;
 using Volo.Abp.Authorization.Permissions.Resources;
 using Volo.Abp.DependencyInjection;
 using Volo.Abp.Localization;
+using Volo.Abp.MultiTenancy;
 using Volo.Abp.OpenIddict.Applications;
 using Volo.Abp.OpenIddict.Localization;
 
@@ -19,12 +20,22 @@ public class ApplicationResourcePermissionProviderKeyLookupService : IResourcePe
 
     protected IApplicationFinder ApplicationFinder { get; }
 
-    public ApplicationResourcePermissionProviderKeyLookupService(IApplicationFinder applicationFinder)
+    protected ICurrentTenant CurrentTenant { get; }
+
+    public ApplicationResourcePermissionProviderKeyLookupService(
+        IApplicationFinder applicationFinder,
+        ICurrentTenant currentTenant)
     {
         ApplicationFinder = applicationFinder;
+        CurrentTenant = currentTenant;
         DisplayName = LocalizableString.Create<AbpOpenIddictResource>(nameof(ApplicationResourcePermissionProviderKeyLookupService));
     }
 
+    public virtual Task<bool> IsAvailableAsync()
+    {
+        return Task.FromResult(CurrentTenant.Id == null);
+    }
+
     public virtual async Task<List<ResourcePermissionProviderKeyInfo>> SearchAsync(string filter = null, int page = 1, CancellationToken cancellationToken = default)
     {
         var applications = await ApplicationFinder.SearchAsync(filter, page);
diff --git a/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/IResourcePermissionManagementProvider.cs b/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/IResourcePermissionManagementProvider.cs
index 429e6f6e85..92850c3420 100644
--- a/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/IResourcePermissionManagementProvider.cs
+++ b/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/IResourcePermissionManagementProvider.cs
@@ -8,6 +8,8 @@ public interface IResourcePermissionManagementProvider : ISingletonDependency //
 {
     string Name { get; }
 
+    Task<bool> IsAvailableAsync();
+
     Task<ResourcePermissionValueProviderGrantInfo> CheckAsync(
         [NotNull] string name,
         [NotNull] string resourceName,
diff --git a/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/IResourcePermissionProviderKeyLookupService.cs b/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/IResourcePermissionProviderKeyLookupService.cs
index aa6ad2a06e..3efdb37401 100644
--- a/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/IResourcePermissionProviderKeyLookupService.cs
+++ b/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/IResourcePermissionProviderKeyLookupService.cs
@@ -9,6 +9,8 @@ public interface IResourcePermissionProviderKeyLookupService
 {
     public string Name { get; }
 
+    Task<bool> IsAvailableAsync();
+
     public ILocalizableString DisplayName { get; }
 
     Task<List<ResourcePermissionProviderKeyInfo>> SearchAsync(string filter = null, int page = 1, CancellationToken cancellationToken = default);
diff --git a/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/ResourcePermissionManagementProvider.cs b/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/ResourcePermissionManagementProvider.cs
index 9682965c67..c579307c86 100644
--- a/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/ResourcePermissionManagementProvider.cs
+++ b/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/ResourcePermissionManagementProvider.cs
@@ -26,6 +26,11 @@ public abstract class ResourcePermissionManagementProvider : IResourcePermission
         CurrentTenant = currentTenant;
     }
 
+    public virtual Task<bool> IsAvailableAsync()
+    {
+        return Task.FromResult(true);
+    }
+
     public virtual async Task<ResourcePermissionValueProviderGrantInfo> CheckAsync(string name, string resourceName, string resourceKey, string providerName, string providerKey)
     {
         var multiplePermissionValueProviderGrantInfo = await CheckAsync(new[] { name }, resourceName, resourceKey, providerName, providerKey);
diff --git a/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/ResourcePermissionManager.cs b/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/ResourcePermissionManager.cs
index c4b898e761..f951f312eb 100644
--- a/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/ResourcePermissionManager.cs
+++ b/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/ResourcePermissionManager.cs
@@ -70,9 +70,17 @@ public class ResourcePermissionManager : IResourcePermissionManager, ISingletonD
         );
     }
 
-    public virtual Task<List<IResourcePermissionProviderKeyLookupService>> GetProviderKeyLookupServicesAsync()
+    public virtual async Task<List<IResourcePermissionProviderKeyLookupService>> GetProviderKeyLookupServicesAsync()
     {
-        return Task.FromResult(_lazyProviderKeyLookupServices.Value);
+        var availableServices = new List<IResourcePermissionProviderKeyLookupService>();
+        foreach (var service in _lazyProviderKeyLookupServices.Value)
+        {
+            if (await service.IsAvailableAsync())
+            {
+                availableServices.Add(service);
+            }
+        }
+        return availableServices;
     }
 
     public virtual  Task<IResourcePermissionProviderKeyLookupService> GetProviderKeyLookupServiceAsync(string serviceName)
@@ -282,6 +290,12 @@ public class ResourcePermissionManager : IResourcePermissionManager, ISingletonD
             throw new AbpException("Unknown resource permission management provider: " + providerName);
         }
 
+        if (!await provider.IsAvailableAsync())
+        {
+            //TODO: BusinessException
+            throw new AbpException($"The resource permission management provider '{providerName}' is not available in the current context.");
+        }
+
         await provider.SetAsync(permissionName, resourceName, resourceKey, providerKey, isGranted);
     }
 
@@ -378,6 +392,11 @@ public class ResourcePermissionManager : IResourcePermissionManager, ISingletonD
 
         foreach (var provider in ManagementProviders)
         {
+            if (!await provider.IsAvailableAsync())
+            {
+                continue;
+            }
+
             permissionNames = resourcePermissions.Select(x => x.Name).ToArray();
             var multiplePermissionValueProviderGrantInfo = await provider.CheckAsync(permissionNames, resourceName, resourceKey, providerName, providerKey);
 
diff --git a/modules/permission-management/test/Volo.Abp.PermissionManagement.Domain.Tests/Volo/Abp/PermissionManagement/ResourcePermissionManager_Tests.cs b/modules/permission-management/test/Volo.Abp.PermissionManagement.Domain.Tests/Volo/Abp/PermissionManagement/ResourcePermissionManager_Tests.cs
index 73d37a5ff3..4124f216cd 100644
--- a/modules/permission-management/test/Volo.Abp.PermissionManagement.Domain.Tests/Volo/Abp/PermissionManagement/ResourcePermissionManager_Tests.cs
+++ b/modules/permission-management/test/Volo.Abp.PermissionManagement.Domain.Tests/Volo/Abp/PermissionManagement/ResourcePermissionManager_Tests.cs
@@ -334,4 +334,55 @@ public class ResourcePermissionManager_Tests : PermissionTestBase
             "Test",
             "Test")).ShouldBeNull();
     }
+
+    [Fact]
+    public async Task GetProviderKeyLookupServicesAsync_Should_Not_Return_Unavailable_Services()
+    {
+        var lookupServices = await _resourcePermissionManager.GetProviderKeyLookupServicesAsync();
+
+        lookupServices.ShouldContain(s => s.Name == "Test");
+        lookupServices.ShouldNotContain(s => s.Name == "TestUnavailable");
+    }
+
+    [Fact]
+    public async Task GetAsync_Should_Not_Return_Grant_From_Unavailable_Provider()
+    {
+        // Insert a grant directly via repository to simulate data stored by an unavailable provider
+        await _resourcePermissionGrantRepository.InsertAsync(new ResourcePermissionGrant(
+            Guid.NewGuid(),
+            "MyResourcePermission1",
+            TestEntityResource.ResourceName,
+            TestEntityResource.ResourceKey1,
+            "TestUnavailable",
+            "someKey")
+        );
+
+        var grantedProviders = await _resourcePermissionManager.GetAsync(
+            "MyResourcePermission1",
+            TestEntityResource.ResourceName,
+            TestEntityResource.ResourceKey1,
+            "TestUnavailable",
+            "someKey");
+
+        // The unavailable provider is skipped, so the permission should not be considered granted via it
+        grantedProviders.IsGranted.ShouldBeFalse();
+        grantedProviders.Providers.ShouldNotContain(p => p.Name == "TestUnavailable");
+    }
+
+    [Fact]
+    public async Task SetAsync_Should_Throw_When_Provider_Is_Unavailable()
+    {
+        var exception = await Assert.ThrowsAsync<AbpException>(async () =>
+        {
+            await _resourcePermissionManager.SetAsync(
+                "MyResourcePermission1",
+                TestEntityResource.ResourceName,
+                TestEntityResource.ResourceKey1,
+                "TestUnavailable",
+                "someKey",
+                true);
+        });
+
+        exception.Message.ShouldBe("The resource permission management provider 'TestUnavailable' is not available in the current context.");
+    }
 }
diff --git a/modules/permission-management/test/Volo.Abp.PermissionManagement.TestBase/Volo/Abp/PermissionManagement/AbpPermissionManagementTestBaseModule.cs b/modules/permission-management/test/Volo.Abp.PermissionManagement.TestBase/Volo/Abp/PermissionManagement/AbpPermissionManagementTestBaseModule.cs
index bf6eca7bc2..0372fa41d6 100644
--- a/modules/permission-management/test/Volo.Abp.PermissionManagement.TestBase/Volo/Abp/PermissionManagement/AbpPermissionManagementTestBaseModule.cs
+++ b/modules/permission-management/test/Volo.Abp.PermissionManagement.TestBase/Volo/Abp/PermissionManagement/AbpPermissionManagementTestBaseModule.cs
@@ -23,7 +23,9 @@ public class AbpPermissionManagementTestBaseModule : AbpModule
         {
             options.ManagementProviders.Add<TestPermissionManagementProvider>();
             options.ResourceManagementProviders.Add<TestResourcePermissionManagementProvider>();
+            options.ResourceManagementProviders.Add<TestUnavailableResourcePermissionManagementProvider>();
             options.ResourcePermissionProviderKeyLookupServices.Add<TestResourcePermissionProviderKeyLookupService>();
+            options.ResourcePermissionProviderKeyLookupServices.Add<TestUnavailableResourcePermissionProviderKeyLookupService>();
         });
     }
 
diff --git a/modules/permission-management/test/Volo.Abp.PermissionManagement.TestBase/Volo/Abp/PermissionManagement/TestResourcePermissionProviderKeyLookupService.cs b/modules/permission-management/test/Volo.Abp.PermissionManagement.TestBase/Volo/Abp/PermissionManagement/TestResourcePermissionProviderKeyLookupService.cs
index f42a204f7a..29a4589ac6 100644
--- a/modules/permission-management/test/Volo.Abp.PermissionManagement.TestBase/Volo/Abp/PermissionManagement/TestResourcePermissionProviderKeyLookupService.cs
+++ b/modules/permission-management/test/Volo.Abp.PermissionManagement.TestBase/Volo/Abp/PermissionManagement/TestResourcePermissionProviderKeyLookupService.cs
@@ -12,6 +12,11 @@ public class TestResourcePermissionProviderKeyLookupService : IResourcePermissio
 
     public ILocalizableString DisplayName => new LocalizableString("Test", "TestResource");
 
+    public Task<bool> IsAvailableAsync()
+    {
+        return Task.FromResult(true);
+    }
+
     public Task<List<ResourcePermissionProviderKeyInfo>> SearchAsync(string filter = null, int page = 1, CancellationToken cancellationToken = default)
     {
         throw new System.NotImplementedException();
diff --git a/modules/permission-management/test/Volo.Abp.PermissionManagement.TestBase/Volo/Abp/PermissionManagement/TestUnavailableResourcePermissionManagementProvider.cs b/modules/permission-management/test/Volo.Abp.PermissionManagement.TestBase/Volo/Abp/PermissionManagement/TestUnavailableResourcePermissionManagementProvider.cs
new file mode 100644
index 0000000000..6cbd3c4c40
--- /dev/null
+++ b/modules/permission-management/test/Volo.Abp.PermissionManagement.TestBase/Volo/Abp/PermissionManagement/TestUnavailableResourcePermissionManagementProvider.cs
@@ -0,0 +1,26 @@
+using System.Threading.Tasks;
+using Volo.Abp.Guids;
+using Volo.Abp.MultiTenancy;
+
+namespace Volo.Abp.PermissionManagement;
+
+public class TestUnavailableResourcePermissionManagementProvider : ResourcePermissionManagementProvider
+{
+    public override string Name => "TestUnavailable";
+
+    public TestUnavailableResourcePermissionManagementProvider(
+        IResourcePermissionGrantRepository resourcePermissionGrantRepository,
+        IGuidGenerator guidGenerator,
+        ICurrentTenant currentTenant)
+        : base(
+            resourcePermissionGrantRepository,
+            guidGenerator,
+            currentTenant)
+    {
+    }
+
+    public override Task<bool> IsAvailableAsync()
+    {
+        return Task.FromResult(false);
+    }
+}
diff --git a/modules/permission-management/test/Volo.Abp.PermissionManagement.TestBase/Volo/Abp/PermissionManagement/TestUnavailableResourcePermissionProviderKeyLookupService.cs b/modules/permission-management/test/Volo.Abp.PermissionManagement.TestBase/Volo/Abp/PermissionManagement/TestUnavailableResourcePermissionProviderKeyLookupService.cs
new file mode 100644
index 0000000000..dd273d614c
--- /dev/null
+++ b/modules/permission-management/test/Volo.Abp.PermissionManagement.TestBase/Volo/Abp/PermissionManagement/TestUnavailableResourcePermissionProviderKeyLookupService.cs
@@ -0,0 +1,29 @@
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using Volo.Abp.DependencyInjection;
+using Volo.Abp.Localization;
+
+namespace Volo.Abp.PermissionManagement;
+
+public class TestUnavailableResourcePermissionProviderKeyLookupService : IResourcePermissionProviderKeyLookupService, ITransientDependency
+{
+    public string Name => "TestUnavailable";
+
+    public ILocalizableString DisplayName => new LocalizableString("TestUnavailable", "TestResource");
+
+    public Task<bool> IsAvailableAsync()
+    {
+        return Task.FromResult(false);
+    }
+
+    public Task<List<ResourcePermissionProviderKeyInfo>> SearchAsync(string filter = null, int page = 1, CancellationToken cancellationToken = default)
+    {
+        throw new System.NotImplementedException();
+    }
+
+    public Task<List<ResourcePermissionProviderKeyInfo>> SearchAsync(string[] keys, CancellationToken cancellationToken = default)
+    {
+        throw new System.NotImplementedException();
+    }
+}