diff --git a/src/OrchardCore.Modules/OrchardCore.AdminMenu/Deployment/AdminMenuDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.AdminMenu/Deployment/AdminMenuDeploymentSource.cs
index 0502063da9b..034c0b17cc1 100644
--- a/src/OrchardCore.Modules/OrchardCore.AdminMenu/Deployment/AdminMenuDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.AdminMenu/Deployment/AdminMenuDeploymentSource.cs
@@ -7,7 +7,7 @@
 
 namespace OrchardCore.AdminMenu.Deployment;
 
-public class AdminMenuDeploymentSource
+public sealed class AdminMenuDeploymentSource
     : DeploymentSourceBase<AdminMenuDeploymentStep>
 {
     private readonly IAdminMenuService _adminMenuService;
diff --git a/src/OrchardCore.Modules/OrchardCore.ContentTypes/Deployment/ContentDefinitionDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.ContentTypes/Deployment/ContentDefinitionDeploymentSource.cs
index f499be5309c..4a641f2c2ba 100644
--- a/src/OrchardCore.Modules/OrchardCore.ContentTypes/Deployment/ContentDefinitionDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.ContentTypes/Deployment/ContentDefinitionDeploymentSource.cs
@@ -4,7 +4,7 @@
 
 namespace OrchardCore.ContentTypes.Deployment;
 
-public class ContentDefinitionDeploymentSource
+public sealed class ContentDefinitionDeploymentSource
     : DeploymentSourceBase<ContentDefinitionDeploymentStep>
 {
     private readonly IContentDefinitionStore _contentDefinitionStore;
diff --git a/src/OrchardCore.Modules/OrchardCore.ContentTypes/Deployment/DeleteContentDefinitionDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.ContentTypes/Deployment/DeleteContentDefinitionDeploymentSource.cs
index 22e024d0107..1f9fca776cd 100644
--- a/src/OrchardCore.Modules/OrchardCore.ContentTypes/Deployment/DeleteContentDefinitionDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.ContentTypes/Deployment/DeleteContentDefinitionDeploymentSource.cs
@@ -3,7 +3,7 @@
 
 namespace OrchardCore.ContentTypes.Deployment;
 
-public class DeleteContentDefinitionDeploymentSource
+public sealed class DeleteContentDefinitionDeploymentSource
     : DeploymentSourceBase<DeleteContentDefinitionDeploymentStep>
 {
     protected override Task ProcessAsync(DeleteContentDefinitionDeploymentStep step, DeploymentPlanResult result)
diff --git a/src/OrchardCore.Modules/OrchardCore.ContentTypes/Deployment/ReplaceContentDefinitionDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.ContentTypes/Deployment/ReplaceContentDefinitionDeploymentSource.cs
index 3d660902753..5ca0a9bdcd5 100644
--- a/src/OrchardCore.Modules/OrchardCore.ContentTypes/Deployment/ReplaceContentDefinitionDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.ContentTypes/Deployment/ReplaceContentDefinitionDeploymentSource.cs
@@ -4,7 +4,7 @@
 
 namespace OrchardCore.ContentTypes.Deployment;
 
-public class ReplaceContentDefinitionDeploymentSource
+public sealed class ReplaceContentDefinitionDeploymentSource
     : DeploymentSourceBase<ReplaceContentDefinitionDeploymentStep>
 {
     private readonly IContentDefinitionStore _contentDefinitionStore;
diff --git a/src/OrchardCore.Modules/OrchardCore.Contents/Deployment/AddToDeploymentPlan/ContentItemDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Contents/Deployment/AddToDeploymentPlan/ContentItemDeploymentSource.cs
index 03b49f2c683..7c3bdb16d99 100644
--- a/src/OrchardCore.Modules/OrchardCore.Contents/Deployment/AddToDeploymentPlan/ContentItemDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Contents/Deployment/AddToDeploymentPlan/ContentItemDeploymentSource.cs
@@ -4,7 +4,7 @@
 
 namespace OrchardCore.Contents.Deployment.AddToDeploymentPlan;
 
-public class ContentItemDeploymentSource
+public sealed class ContentItemDeploymentSource
     : DeploymentSourceBase<ContentItemDeploymentStep>
 {
     private readonly IContentManager _contentManager;
diff --git a/src/OrchardCore.Modules/OrchardCore.Contents/Deployment/AllContentDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Contents/Deployment/AllContentDeploymentSource.cs
index bf2019faca2..f7a0410f471 100644
--- a/src/OrchardCore.Modules/OrchardCore.Contents/Deployment/AllContentDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Contents/Deployment/AllContentDeploymentSource.cs
@@ -6,7 +6,7 @@
 
 namespace OrchardCore.Contents.Deployment;
 
-public class AllContentDeploymentSource
+public sealed class AllContentDeploymentSource
     : DeploymentSourceBase<AllContentDeploymentStep>
 {
     private readonly ISession _session;
diff --git a/src/OrchardCore.Modules/OrchardCore.Contents/Deployment/ContentDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Contents/Deployment/ContentDeploymentSource.cs
index 767605aae61..9251af62b00 100644
--- a/src/OrchardCore.Modules/OrchardCore.Contents/Deployment/ContentDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Contents/Deployment/ContentDeploymentSource.cs
@@ -7,7 +7,7 @@
 
 namespace OrchardCore.Contents.Deployment;
 
-public class ContentDeploymentSource
+public sealed class ContentDeploymentSource
     : DeploymentSourceBase<ContentDeploymentStep>
 {
     private readonly ISession _session;
diff --git a/src/OrchardCore.Modules/OrchardCore.Contents/Deployment/ExportContentToDeploymentTarget/ExportContentToDeploymentTargetDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Contents/Deployment/ExportContentToDeploymentTarget/ExportContentToDeploymentTargetDeploymentSource.cs
index fd9d265606c..f15d07f484f 100644
--- a/src/OrchardCore.Modules/OrchardCore.Contents/Deployment/ExportContentToDeploymentTarget/ExportContentToDeploymentTargetDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Contents/Deployment/ExportContentToDeploymentTarget/ExportContentToDeploymentTargetDeploymentSource.cs
@@ -8,7 +8,7 @@
 
 namespace OrchardCore.Contents.Deployment.ExportContentToDeploymentTarget;
 
-public class ExportContentToDeploymentTargetDeploymentSource
+public sealed class ExportContentToDeploymentTargetDeploymentSource
     : DeploymentSourceBase<ExportContentToDeploymentTargetDeploymentStep>
 {
     private readonly IContentManager _contentManager;
diff --git a/src/OrchardCore.Modules/OrchardCore.CustomSettings/Deployment/CustomSettingsDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.CustomSettings/Deployment/CustomSettingsDeploymentSource.cs
index 7e61377cc34..3d297dc9b6e 100644
--- a/src/OrchardCore.Modules/OrchardCore.CustomSettings/Deployment/CustomSettingsDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.CustomSettings/Deployment/CustomSettingsDeploymentSource.cs
@@ -4,7 +4,7 @@
 
 namespace OrchardCore.CustomSettings.Deployment;
 
-public class CustomSettingsDeploymentSource
+public sealed class CustomSettingsDeploymentSource
     : DeploymentSourceBase<CustomSettingsDeploymentStep>
 {
     private readonly CustomSettingsService _customSettingsService;
diff --git a/src/OrchardCore.Modules/OrchardCore.Deployment/Deployment/DeploymentPlanDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Deployment/Deployment/DeploymentPlanDeploymentSource.cs
index f0aacb6b9b1..369c831376f 100644
--- a/src/OrchardCore.Modules/OrchardCore.Deployment/Deployment/DeploymentPlanDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Deployment/Deployment/DeploymentPlanDeploymentSource.cs
@@ -5,7 +5,7 @@
 
 namespace OrchardCore.Deployment.Deployment;
 
-public class DeploymentPlanDeploymentSource
+public sealed class DeploymentPlanDeploymentSource
     : DeploymentSourceBase<DeploymentPlanDeploymentStep>
 {
     private readonly IDeploymentPlanService _deploymentPlanService;
diff --git a/src/OrchardCore.Modules/OrchardCore.Deployment/Steps/CustomFileDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Deployment/Steps/CustomFileDeploymentSource.cs
index 1b5925b8040..fddc1629e65 100644
--- a/src/OrchardCore.Modules/OrchardCore.Deployment/Steps/CustomFileDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Deployment/Steps/CustomFileDeploymentSource.cs
@@ -2,7 +2,7 @@
 
 namespace OrchardCore.Deployment.Steps;
 
-public class CustomFileDeploymentSource
+public sealed class CustomFileDeploymentSource
     : DeploymentSourceBase<CustomFileDeploymentStep>
 {
     protected override Task ProcessAsync(CustomFileDeploymentStep step, DeploymentPlanResult result)
diff --git a/src/OrchardCore.Modules/OrchardCore.Deployment/Steps/JsonRecipeDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Deployment/Steps/JsonRecipeDeploymentSource.cs
index 110be9c6018..cfe8b2d2658 100644
--- a/src/OrchardCore.Modules/OrchardCore.Deployment/Steps/JsonRecipeDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Deployment/Steps/JsonRecipeDeploymentSource.cs
@@ -2,7 +2,7 @@
 
 namespace OrchardCore.Deployment.Steps;
 
-public class JsonRecipeDeploymentSource
+public sealed class JsonRecipeDeploymentSource
     : DeploymentSourceBase<JsonRecipeDeploymentStep>
 {
     protected override Task ProcessAsync(JsonRecipeDeploymentStep step, DeploymentPlanResult result)
diff --git a/src/OrchardCore.Modules/OrchardCore.Facebook/Deployment/FacebookLoginDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Facebook/Deployment/FacebookLoginDeploymentSource.cs
index 62ad15bbb73..becc34b7365 100644
--- a/src/OrchardCore.Modules/OrchardCore.Facebook/Deployment/FacebookLoginDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Facebook/Deployment/FacebookLoginDeploymentSource.cs
@@ -4,7 +4,7 @@
 
 namespace OrchardCore.Facebook.Deployment;
 
-public class FacebookLoginDeploymentSource
+public sealed class FacebookLoginDeploymentSource
     : DeploymentSourceBase<FacebookLoginDeploymentStep>
 {
     private readonly IFacebookService _facebookService;
diff --git a/src/OrchardCore.Modules/OrchardCore.Features/Deployment/AllFeaturesDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Features/Deployment/AllFeaturesDeploymentSource.cs
index 3712eeb51a5..2335b614d1f 100644
--- a/src/OrchardCore.Modules/OrchardCore.Features/Deployment/AllFeaturesDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Features/Deployment/AllFeaturesDeploymentSource.cs
@@ -4,7 +4,7 @@
 
 namespace OrchardCore.Features.Deployment;
 
-public class AllFeaturesDeploymentSource
+public sealed class AllFeaturesDeploymentSource
     : DeploymentSourceBase<AllFeaturesDeploymentStep>
 {
     private readonly IModuleService _moduleService;
diff --git a/src/OrchardCore.Modules/OrchardCore.Layers/Deployment/AllLayersDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Layers/Deployment/AllLayersDeploymentSource.cs
index c2dc930aaeb..d00c4fbfec6 100644
--- a/src/OrchardCore.Modules/OrchardCore.Layers/Deployment/AllLayersDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Layers/Deployment/AllLayersDeploymentSource.cs
@@ -9,7 +9,7 @@
 
 namespace OrchardCore.Layers.Deployment;
 
-public class AllLayersDeploymentSource
+public sealed class AllLayersDeploymentSource
     : DeploymentSourceBase<AllLayersDeploymentStep>
 {
     private readonly ILayerService _layerService;
diff --git a/src/OrchardCore.Modules/OrchardCore.Media.AmazonS3/Services/MediaS3BucketTenantEvents.cs b/src/OrchardCore.Modules/OrchardCore.Media.AmazonS3/Services/MediaS3BucketTenantEvents.cs
index e604617f736..3a1e325fdc9 100644
--- a/src/OrchardCore.Modules/OrchardCore.Media.AmazonS3/Services/MediaS3BucketTenantEvents.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Media.AmazonS3/Services/MediaS3BucketTenantEvents.cs
@@ -7,7 +7,7 @@
 
 namespace OrchardCore.Media.AmazonS3.Services;
 
-public class MediaS3BucketTenantEvents : AwsTenantEventsBase
+public sealed class MediaS3BucketTenantEvents : AwsTenantEventsBase
 {
     public MediaS3BucketTenantEvents(
         ShellSettings shellSettings,
diff --git a/src/OrchardCore.Modules/OrchardCore.Media.Azure/Services/MediaBlobContainerTenantEvents.cs b/src/OrchardCore.Modules/OrchardCore.Media.Azure/Services/MediaBlobContainerTenantEvents.cs
index 3c6ed356d39..4a3dceb89a4 100644
--- a/src/OrchardCore.Modules/OrchardCore.Media.Azure/Services/MediaBlobContainerTenantEvents.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Media.Azure/Services/MediaBlobContainerTenantEvents.cs
@@ -10,13 +10,13 @@
 
 namespace OrchardCore.Media.Azure.Services;
 
-public class MediaBlobContainerTenantEvents : ModularTenantEvents
+public sealed class MediaBlobContainerTenantEvents : ModularTenantEvents
 {
     private readonly MediaBlobStorageOptions _options;
     private readonly ShellSettings _shellSettings;
     private readonly ILogger _logger;
 
-    protected readonly IStringLocalizer S;
+    internal readonly IStringLocalizer S;
 
     public MediaBlobContainerTenantEvents(
         IOptions<MediaBlobStorageOptions> options,
diff --git a/src/OrchardCore.Modules/OrchardCore.Media/Deployment/AllMediaProfilesDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Media/Deployment/AllMediaProfilesDeploymentSource.cs
index c0da48b7f36..6a615040876 100644
--- a/src/OrchardCore.Modules/OrchardCore.Media/Deployment/AllMediaProfilesDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Media/Deployment/AllMediaProfilesDeploymentSource.cs
@@ -4,7 +4,7 @@
 
 namespace OrchardCore.Media.Deployment;
 
-public class AllMediaProfilesDeploymentSource
+public sealed class AllMediaProfilesDeploymentSource
     : DeploymentSourceBase<AllMediaProfilesDeploymentStep>
 {
     private readonly MediaProfilesManager _mediaProfilesManager;
diff --git a/src/OrchardCore.Modules/OrchardCore.Media/Deployment/MediaDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Media/Deployment/MediaDeploymentSource.cs
index 1c108231867..a3da730c89c 100644
--- a/src/OrchardCore.Modules/OrchardCore.Media/Deployment/MediaDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Media/Deployment/MediaDeploymentSource.cs
@@ -3,7 +3,7 @@
 
 namespace OrchardCore.Media.Deployment;
 
-public class MediaDeploymentSource
+public sealed class MediaDeploymentSource
     : DeploymentSourceBase<MediaDeploymentStep>
 {
     private readonly IMediaFileStore _mediaFileStore;
diff --git a/src/OrchardCore.Modules/OrchardCore.Media/Services/TempDirCleanerService.cs b/src/OrchardCore.Modules/OrchardCore.Media/Services/TempDirCleanerService.cs
index bb27b112167..61c86829ba3 100644
--- a/src/OrchardCore.Modules/OrchardCore.Media/Services/TempDirCleanerService.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Media/Services/TempDirCleanerService.cs
@@ -4,7 +4,7 @@
 
 namespace OrchardCore.Media.Services;
 
-public class TempDirCleanerService : ModularTenantEvents
+public sealed class TempDirCleanerService : ModularTenantEvents
 {
     private readonly IMediaFileStore _fileStore;
     private readonly AttachedMediaFieldFileService _attachedMediaFieldFileService;
diff --git a/src/OrchardCore.Modules/OrchardCore.Microsoft.Authentication/Deployment/AzureADDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Microsoft.Authentication/Deployment/AzureADDeploymentSource.cs
index d7ebe2202a9..e3b41cb6560 100644
--- a/src/OrchardCore.Modules/OrchardCore.Microsoft.Authentication/Deployment/AzureADDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Microsoft.Authentication/Deployment/AzureADDeploymentSource.cs
@@ -5,7 +5,7 @@
 
 namespace OrchardCore.Microsoft.Authentication.Deployment;
 
-public class AzureADDeploymentSource
+public sealed class AzureADDeploymentSource
     : DeploymentSourceBase<AzureADDeploymentStep>
 {
     private readonly IAzureADService _azureADService;
diff --git a/src/OrchardCore.Modules/OrchardCore.OpenId/Deployment/OpenIdServerDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.OpenId/Deployment/OpenIdServerDeploymentSource.cs
index db7f2374f0b..751e1b68dc3 100644
--- a/src/OrchardCore.Modules/OrchardCore.OpenId/Deployment/OpenIdServerDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.OpenId/Deployment/OpenIdServerDeploymentSource.cs
@@ -6,7 +6,7 @@
 
 namespace OrchardCore.OpenId.Deployment;
 
-public class OpenIdServerDeploymentSource
+public sealed class OpenIdServerDeploymentSource
     : DeploymentSourceBase<OpenIdServerDeploymentStep>
 {
     private readonly IOpenIdServerService _openIdServerService;
diff --git a/src/OrchardCore.Modules/OrchardCore.OpenId/Deployment/OpenIdValidationDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.OpenId/Deployment/OpenIdValidationDeploymentSource.cs
index f0a782f5a10..0676ab5dcf2 100644
--- a/src/OrchardCore.Modules/OrchardCore.OpenId/Deployment/OpenIdValidationDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.OpenId/Deployment/OpenIdValidationDeploymentSource.cs
@@ -5,7 +5,7 @@
 
 namespace OrchardCore.OpenId.Deployment;
 
-public class OpenIdValidationDeploymentSource
+public sealed class OpenIdValidationDeploymentSource
     : DeploymentSourceBase<OpenIdValidationDeploymentStep>
 {
     private readonly IOpenIdValidationService _openIdValidationService;
diff --git a/src/OrchardCore.Modules/OrchardCore.Placements/Deployment/PlacementsDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Placements/Deployment/PlacementsDeploymentSource.cs
index 8a5e8fc02b7..964e7003b83 100644
--- a/src/OrchardCore.Modules/OrchardCore.Placements/Deployment/PlacementsDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Placements/Deployment/PlacementsDeploymentSource.cs
@@ -7,7 +7,7 @@
 
 namespace OrchardCore.Placements.Deployment;
 
-public class PlacementsDeploymentSource
+public sealed class PlacementsDeploymentSource
     : DeploymentSourceBase<PlacementsDeploymentStep>
 {
     private readonly PlacementsManager _placementsManager;
diff --git a/src/OrchardCore.Modules/OrchardCore.Queries/Deployment/AllQueriesDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Queries/Deployment/AllQueriesDeploymentSource.cs
index b59a3ce7d91..9303d9301c1 100644
--- a/src/OrchardCore.Modules/OrchardCore.Queries/Deployment/AllQueriesDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Queries/Deployment/AllQueriesDeploymentSource.cs
@@ -6,7 +6,7 @@
 
 namespace OrchardCore.Queries.Deployment;
 
-public class AllQueriesDeploymentSource
+public sealed class AllQueriesDeploymentSource
     : DeploymentSourceBase<AllQueriesDeploymentStep>
 {
     private readonly IQueryManager _queryManager;
diff --git a/src/OrchardCore.Modules/OrchardCore.Queries/Deployment/QueryBasedContentDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Queries/Deployment/QueryBasedContentDeploymentSource.cs
index 615cf61bfb8..c89bba25531 100644
--- a/src/OrchardCore.Modules/OrchardCore.Queries/Deployment/QueryBasedContentDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Queries/Deployment/QueryBasedContentDeploymentSource.cs
@@ -5,7 +5,7 @@
 
 namespace OrchardCore.Queries.Deployment;
 
-public class QueryBasedContentDeploymentSource
+public sealed class QueryBasedContentDeploymentSource
     : DeploymentSourceBase<QueryBasedContentDeploymentStep>
 {
     private readonly IQueryManager _queryManager;
diff --git a/src/OrchardCore.Modules/OrchardCore.Redis/Services/RedisService.cs b/src/OrchardCore.Modules/OrchardCore.Redis/Services/RedisService.cs
index 93d6447d5fe..8eecb06193a 100644
--- a/src/OrchardCore.Modules/OrchardCore.Redis/Services/RedisService.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Redis/Services/RedisService.cs
@@ -4,7 +4,7 @@
 
 namespace OrchardCore.Redis.Services;
 
-public class RedisService : ModularTenantEvents, IRedisService
+public sealed class RedisService : ModularTenantEvents, IRedisService
 {
     private readonly IRedisDatabaseFactory _factory;
     private readonly RedisOptions _options;
diff --git a/src/OrchardCore.Modules/OrchardCore.Roles/Deployment/AllRolesDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Roles/Deployment/AllRolesDeploymentSource.cs
index ce660fdb271..726108549cd 100644
--- a/src/OrchardCore.Modules/OrchardCore.Roles/Deployment/AllRolesDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Roles/Deployment/AllRolesDeploymentSource.cs
@@ -8,7 +8,7 @@
 
 namespace OrchardCore.Roles.Deployment;
 
-public class AllRolesDeploymentSource
+public sealed class AllRolesDeploymentSource
     : DeploymentSourceBase<AllRolesDeploymentStep>
 {
     private readonly RoleManager<IRole> _roleManager;
diff --git a/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Deployment/LuceneIndexDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Deployment/LuceneIndexDeploymentSource.cs
index 07d1dc0e47a..9d989745c3a 100644
--- a/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Deployment/LuceneIndexDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Deployment/LuceneIndexDeploymentSource.cs
@@ -4,7 +4,7 @@
 
 namespace OrchardCore.Search.Lucene.Deployment;
 
-public class LuceneIndexDeploymentSource
+public sealed class LuceneIndexDeploymentSource
     : DeploymentSourceBase<LuceneIndexDeploymentStep>
 {
     private readonly LuceneIndexSettingsService _luceneIndexSettingsService;
diff --git a/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Deployment/LuceneIndexRebuildDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Deployment/LuceneIndexRebuildDeploymentSource.cs
index 7bccad79c29..dccafefd982 100644
--- a/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Deployment/LuceneIndexRebuildDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Deployment/LuceneIndexRebuildDeploymentSource.cs
@@ -3,7 +3,7 @@
 
 namespace OrchardCore.Search.Lucene.Deployment;
 
-public class LuceneIndexRebuildDeploymentSource
+public sealed class LuceneIndexRebuildDeploymentSource
     : DeploymentSourceBase<LuceneIndexRebuildDeploymentStep>
 {
     protected override Task ProcessAsync(LuceneIndexRebuildDeploymentStep step, DeploymentPlanResult result)
diff --git a/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Deployment/LuceneIndexResetDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Deployment/LuceneIndexResetDeploymentSource.cs
index 44a2efa95f0..ec41c9b01d2 100644
--- a/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Deployment/LuceneIndexResetDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Deployment/LuceneIndexResetDeploymentSource.cs
@@ -3,7 +3,7 @@
 
 namespace OrchardCore.Search.Lucene.Deployment;
 
-public class LuceneIndexResetDeploymentSource
+public sealed class LuceneIndexResetDeploymentSource
     : DeploymentSourceBase<LuceneIndexResetDeploymentStep>
 {
     protected override Task ProcessAsync(LuceneIndexResetDeploymentStep step, DeploymentPlanResult result)
diff --git a/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Deployment/LuceneSettingsDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Deployment/LuceneSettingsDeploymentSource.cs
index 4924a8170cd..e5a1e2a9380 100644
--- a/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Deployment/LuceneSettingsDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Deployment/LuceneSettingsDeploymentSource.cs
@@ -3,7 +3,7 @@
 
 namespace OrchardCore.Search.Lucene.Deployment;
 
-public class LuceneSettingsDeploymentSource
+public sealed class LuceneSettingsDeploymentSource
     : DeploymentSourceBase<LuceneSettingsDeploymentStep>
 {
     private readonly LuceneIndexingService _luceneIndexingService;
diff --git a/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Services/LuceneIndexInitializerService.cs b/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Services/LuceneIndexInitializerService.cs
index 54896d72e54..efff524e411 100644
--- a/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Services/LuceneIndexInitializerService.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Search.Lucene/Services/LuceneIndexInitializerService.cs
@@ -5,7 +5,7 @@
 
 namespace OrchardCore.Search.Lucene;
 
-public class LuceneIndexInitializerService : ModularTenantEvents
+public sealed class LuceneIndexInitializerService : ModularTenantEvents
 {
     private readonly ShellSettings _shellSettings;
 
diff --git a/src/OrchardCore.Modules/OrchardCore.Search/Deployment/SearchSettingsDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Search/Deployment/SearchSettingsDeploymentSource.cs
index 64f53f6f431..5133e679acb 100644
--- a/src/OrchardCore.Modules/OrchardCore.Search/Deployment/SearchSettingsDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Search/Deployment/SearchSettingsDeploymentSource.cs
@@ -5,7 +5,7 @@
 
 namespace OrchardCore.Search.Deployment;
 
-public class SearchSettingsDeploymentSource
+public sealed class SearchSettingsDeploymentSource
     : DeploymentSourceBase<SearchSettingsDeploymentStep>
 {
     private readonly ISiteService _siteService;
diff --git a/src/OrchardCore.Modules/OrchardCore.Settings/Deployment/SiteSettingsDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Settings/Deployment/SiteSettingsDeploymentSource.cs
index 2640e4099d3..fa22a1132f2 100644
--- a/src/OrchardCore.Modules/OrchardCore.Settings/Deployment/SiteSettingsDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Settings/Deployment/SiteSettingsDeploymentSource.cs
@@ -3,7 +3,7 @@
 
 namespace OrchardCore.Settings.Deployment;
 
-public class SiteSettingsDeploymentSource
+public sealed class SiteSettingsDeploymentSource
     : DeploymentSourceBase<SiteSettingsDeploymentStep>
 {
     private readonly ISiteService _siteService;
diff --git a/src/OrchardCore.Modules/OrchardCore.Shortcodes/Deployment/AllShortcodeTemplatesDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Shortcodes/Deployment/AllShortcodeTemplatesDeploymentSource.cs
index 7c048f9fa59..64e90e05ac2 100644
--- a/src/OrchardCore.Modules/OrchardCore.Shortcodes/Deployment/AllShortcodeTemplatesDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Shortcodes/Deployment/AllShortcodeTemplatesDeploymentSource.cs
@@ -4,7 +4,7 @@
 
 namespace OrchardCore.Shortcodes.Deployment;
 
-public class AllShortcodeTemplatesDeploymentSource
+public sealed class AllShortcodeTemplatesDeploymentSource
     : DeploymentSourceBase<AllShortcodeTemplatesDeploymentStep>
 {
     private readonly ShortcodeTemplatesManager _templatesManager;
diff --git a/src/OrchardCore.Modules/OrchardCore.Templates/Deployment/AllAdminTemplatesDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Templates/Deployment/AllAdminTemplatesDeploymentSource.cs
index fcd65d71a94..c980d863d1c 100644
--- a/src/OrchardCore.Modules/OrchardCore.Templates/Deployment/AllAdminTemplatesDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Templates/Deployment/AllAdminTemplatesDeploymentSource.cs
@@ -6,7 +6,7 @@
 
 namespace OrchardCore.Templates.Deployment;
 
-public class AllAdminTemplatesDeploymentSource
+public sealed class AllAdminTemplatesDeploymentSource
     : DeploymentSourceBase<AllAdminTemplatesDeploymentStep>
 {
     private readonly AdminTemplatesManager _templatesManager;
diff --git a/src/OrchardCore.Modules/OrchardCore.Templates/Deployment/AllTemplatesDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Templates/Deployment/AllTemplatesDeploymentSource.cs
index 97b6ecb2826..1772912b289 100644
--- a/src/OrchardCore.Modules/OrchardCore.Templates/Deployment/AllTemplatesDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Templates/Deployment/AllTemplatesDeploymentSource.cs
@@ -6,7 +6,7 @@
 
 namespace OrchardCore.Templates.Deployment;
 
-public class AllTemplatesDeploymentSource
+public sealed class AllTemplatesDeploymentSource
     : DeploymentSourceBase<AllTemplatesDeploymentStep>
 {
     private readonly TemplatesManager _templatesManager;
diff --git a/src/OrchardCore.Modules/OrchardCore.Tenants/Deployment/AllFeatureProfilesDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Tenants/Deployment/AllFeatureProfilesDeploymentSource.cs
index a21b17d3d79..24bf89c5563 100644
--- a/src/OrchardCore.Modules/OrchardCore.Tenants/Deployment/AllFeatureProfilesDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Tenants/Deployment/AllFeatureProfilesDeploymentSource.cs
@@ -4,7 +4,7 @@
 
 namespace OrchardCore.Tenants.Deployment;
 
-public class AllFeatureProfilesDeploymentSource
+public sealed class AllFeatureProfilesDeploymentSource
     : DeploymentSourceBase<AllFeatureProfilesDeploymentStep>
 {
     private readonly FeatureProfilesManager _featureProfilesManager;
diff --git a/src/OrchardCore.Modules/OrchardCore.Themes/Deployment/ThemesDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Themes/Deployment/ThemesDeploymentSource.cs
index e50bcb58df4..8e1562fd5d1 100644
--- a/src/OrchardCore.Modules/OrchardCore.Themes/Deployment/ThemesDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Themes/Deployment/ThemesDeploymentSource.cs
@@ -6,7 +6,7 @@
 
 namespace OrchardCore.Themes.Deployment;
 
-public class ThemesDeploymentSource
+public sealed class ThemesDeploymentSource
     : DeploymentSourceBase<ThemesDeploymentStep>
 {
     private readonly ISiteThemeService _siteThemeService;
diff --git a/src/OrchardCore.Modules/OrchardCore.Users/Deployment/AllUsersDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Users/Deployment/AllUsersDeploymentSource.cs
index 991c4f0e0a5..8b92ba375c8 100644
--- a/src/OrchardCore.Modules/OrchardCore.Users/Deployment/AllUsersDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Users/Deployment/AllUsersDeploymentSource.cs
@@ -5,7 +5,7 @@
 
 namespace OrchardCore.Users.Deployment;
 
-public class AllUsersDeploymentSource
+public sealed class AllUsersDeploymentSource
     : DeploymentSourceBase<AllUsersDeploymentStep>
 {
     private readonly ISession _session;
diff --git a/src/OrchardCore.Modules/OrchardCore.Users/Deployment/CustomUserSettingsDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Users/Deployment/CustomUserSettingsDeploymentSource.cs
index d54f80451bb..f374723f229 100644
--- a/src/OrchardCore.Modules/OrchardCore.Users/Deployment/CustomUserSettingsDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Users/Deployment/CustomUserSettingsDeploymentSource.cs
@@ -6,7 +6,7 @@
 
 namespace OrchardCore.Users.Deployment;
 
-public class CustomUserSettingsDeploymentSource
+public sealed class CustomUserSettingsDeploymentSource
     : DeploymentSourceBase<CustomUserSettingsDeploymentStep>
 {
     private readonly CustomUserSettingsService _customUserSettingsService;
diff --git a/src/OrchardCore.Modules/OrchardCore.Workflows/Deployment/AllWorkflowTypeDeploymentSource.cs b/src/OrchardCore.Modules/OrchardCore.Workflows/Deployment/AllWorkflowTypeDeploymentSource.cs
index 62696c1bdb4..772c1aa3bf5 100644
--- a/src/OrchardCore.Modules/OrchardCore.Workflows/Deployment/AllWorkflowTypeDeploymentSource.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Workflows/Deployment/AllWorkflowTypeDeploymentSource.cs
@@ -8,7 +8,7 @@
 
 namespace OrchardCore.Workflows.Deployment;
 
-public class AllWorkflowTypeDeploymentSource
+public sealed class AllWorkflowTypeDeploymentSource
     : DeploymentSourceBase<AllWorkflowTypeDeploymentStep>
 {
     private readonly IWorkflowTypeStore _workflowTypeStore;
diff --git a/src/OrchardCore/OrchardCore.Data/Migration/AutomaticDataMigrations.cs b/src/OrchardCore/OrchardCore.Data/Migration/AutomaticDataMigrations.cs
index 07253518fea..8c40808965b 100644
--- a/src/OrchardCore/OrchardCore.Data/Migration/AutomaticDataMigrations.cs
+++ b/src/OrchardCore/OrchardCore.Data/Migration/AutomaticDataMigrations.cs
@@ -8,7 +8,7 @@ namespace OrchardCore.Data.Migration;
 /// <summary>
 /// Represents a tenant event that will be registered to OrchardShell.Activated in order to run migrations automatically.
 /// </summary>
-public class AutomaticDataMigrations : ModularTenantEvents
+public sealed class AutomaticDataMigrations : ModularTenantEvents
 {
     private readonly ShellSettings _shellSettings;
     private readonly ILogger _logger;
diff --git a/src/OrchardCore/OrchardCore.Search.AzureAI.Core/Deployment/AzureAISearchIndexDeploymentSource.cs b/src/OrchardCore/OrchardCore.Search.AzureAI.Core/Deployment/AzureAISearchIndexDeploymentSource.cs
index 9ad107b4cb0..59e3b45c5c1 100644
--- a/src/OrchardCore/OrchardCore.Search.AzureAI.Core/Deployment/AzureAISearchIndexDeploymentSource.cs
+++ b/src/OrchardCore/OrchardCore.Search.AzureAI.Core/Deployment/AzureAISearchIndexDeploymentSource.cs
@@ -6,7 +6,7 @@
 
 namespace OrchardCore.Search.AzureAI.Deployment;
 
-public class AzureAISearchIndexDeploymentSource
+public sealed class AzureAISearchIndexDeploymentSource
     : DeploymentSourceBase<AzureAISearchIndexDeploymentStep>
 {
     private readonly AzureAISearchIndexSettingsService _indexSettingsService;
diff --git a/src/OrchardCore/OrchardCore.Search.AzureAI.Core/Deployment/AzureAISearchIndexRebuildDeploymentSource.cs b/src/OrchardCore/OrchardCore.Search.AzureAI.Core/Deployment/AzureAISearchIndexRebuildDeploymentSource.cs
index c427ad27f4d..9b6e43f09be 100644
--- a/src/OrchardCore/OrchardCore.Search.AzureAI.Core/Deployment/AzureAISearchIndexRebuildDeploymentSource.cs
+++ b/src/OrchardCore/OrchardCore.Search.AzureAI.Core/Deployment/AzureAISearchIndexRebuildDeploymentSource.cs
@@ -3,7 +3,7 @@
 
 namespace OrchardCore.Search.AzureAI.Deployment;
 
-public class AzureAISearchIndexRebuildDeploymentSource
+public sealed class AzureAISearchIndexRebuildDeploymentSource
     : DeploymentSourceBase<AzureAISearchIndexRebuildDeploymentStep>
 {
     public const string Name = "azureai-index-rebuild";
diff --git a/src/OrchardCore/OrchardCore.Search.AzureAI.Core/Deployment/AzureAISearchIndexResetDeploymentSource.cs b/src/OrchardCore/OrchardCore.Search.AzureAI.Core/Deployment/AzureAISearchIndexResetDeploymentSource.cs
index cba205f147c..4a542669c0f 100644
--- a/src/OrchardCore/OrchardCore.Search.AzureAI.Core/Deployment/AzureAISearchIndexResetDeploymentSource.cs
+++ b/src/OrchardCore/OrchardCore.Search.AzureAI.Core/Deployment/AzureAISearchIndexResetDeploymentSource.cs
@@ -3,7 +3,7 @@
 
 namespace OrchardCore.Search.AzureAI.Deployment;
 
-public class AzureAISearchIndexResetDeploymentSource
+public sealed class AzureAISearchIndexResetDeploymentSource
     : DeploymentSourceBase<AzureAISearchIndexResetDeploymentStep>
 {
     public const string Name = "azureai-index-reset";
diff --git a/src/OrchardCore/OrchardCore.Search.AzureAI.Core/Deployment/AzureAISearchSettingsDeploymentSource.cs b/src/OrchardCore/OrchardCore.Search.AzureAI.Core/Deployment/AzureAISearchSettingsDeploymentSource.cs
index 4bcbc995123..f0ffc069bad 100644
--- a/src/OrchardCore/OrchardCore.Search.AzureAI.Core/Deployment/AzureAISearchSettingsDeploymentSource.cs
+++ b/src/OrchardCore/OrchardCore.Search.AzureAI.Core/Deployment/AzureAISearchSettingsDeploymentSource.cs
@@ -5,7 +5,7 @@
 
 namespace OrchardCore.Search.AzureAI.Deployment;
 
-public class AzureAISearchSettingsDeploymentSource(ISiteService siteService)
+public sealed class AzureAISearchSettingsDeploymentSource(ISiteService siteService)
     : DeploymentSourceBase<AzureAISearchSettingsDeploymentStep>
 {
     private readonly ISiteService _siteService = siteService;
diff --git a/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Deployment/ElasticIndexDeploymentSource.cs b/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Deployment/ElasticIndexDeploymentSource.cs
index 841d9203cb3..da5facecaf8 100644
--- a/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Deployment/ElasticIndexDeploymentSource.cs
+++ b/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Deployment/ElasticIndexDeploymentSource.cs
@@ -5,7 +5,7 @@
 
 namespace OrchardCore.Search.Elasticsearch.Core.Deployment;
 
-public class ElasticIndexDeploymentSource
+public sealed class ElasticIndexDeploymentSource
     : DeploymentSourceBase<ElasticIndexDeploymentStep>
 {
     private readonly ElasticIndexSettingsService _elasticIndexSettingsService;
diff --git a/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Deployment/ElasticIndexRebuildDeploymentSource.cs b/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Deployment/ElasticIndexRebuildDeploymentSource.cs
index aa8346aba31..bd5b9d7ea2f 100644
--- a/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Deployment/ElasticIndexRebuildDeploymentSource.cs
+++ b/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Deployment/ElasticIndexRebuildDeploymentSource.cs
@@ -3,7 +3,7 @@
 
 namespace OrchardCore.Search.Elasticsearch.Core.Deployment;
 
-public class ElasticIndexRebuildDeploymentSource
+public sealed class ElasticIndexRebuildDeploymentSource
     : DeploymentSourceBase<ElasticIndexRebuildDeploymentStep>
 {
     protected override Task ProcessAsync(ElasticIndexRebuildDeploymentStep step, DeploymentPlanResult result)
diff --git a/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Deployment/ElasticIndexResetDeploymentSource.cs b/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Deployment/ElasticIndexResetDeploymentSource.cs
index ac0b8849d21..4a8f2dea3e4 100644
--- a/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Deployment/ElasticIndexResetDeploymentSource.cs
+++ b/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Deployment/ElasticIndexResetDeploymentSource.cs
@@ -3,7 +3,7 @@
 
 namespace OrchardCore.Search.Elasticsearch.Core.Deployment;
 
-public class ElasticIndexResetDeploymentSource
+public sealed class ElasticIndexResetDeploymentSource
     : DeploymentSourceBase<ElasticIndexResetDeploymentStep>
 {
     protected override Task ProcessAsync(ElasticIndexResetDeploymentStep step, DeploymentPlanResult result)
diff --git a/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Deployment/ElasticSettingsDeploymentSource.cs b/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Deployment/ElasticSettingsDeploymentSource.cs
index 754b6c64b36..69ffd23d722 100644
--- a/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Deployment/ElasticSettingsDeploymentSource.cs
+++ b/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Deployment/ElasticSettingsDeploymentSource.cs
@@ -4,7 +4,7 @@
 
 namespace OrchardCore.Search.Elasticsearch.Core.Deployment;
 
-public class ElasticSettingsDeploymentSource
+public sealed class ElasticSettingsDeploymentSource
     : DeploymentSourceBase<ElasticSettingsDeploymentStep>
 {
     private readonly ElasticIndexingService _elasticIndexingService;
diff --git a/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Services/ElasticIndexInitializerService.cs b/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Services/ElasticIndexInitializerService.cs
index 732d4ee7725..0bf0a2e16cc 100644
--- a/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Services/ElasticIndexInitializerService.cs
+++ b/src/OrchardCore/OrchardCore.Search.Elasticsearch.Core/Services/ElasticIndexInitializerService.cs
@@ -13,12 +13,13 @@ namespace OrchardCore.Search.Elasticsearch;
 /// Provides a way to initialize Elasticsearch index on startup of the application
 /// if the index is not found on the Elasticsearch server.
 /// </summary>
-public class ElasticIndexInitializerService : ModularTenantEvents
+public sealed class ElasticIndexInitializerService : ModularTenantEvents
 {
     private readonly ShellSettings _shellSettings;
     private readonly ElasticIndexManager _elasticIndexManager;
     private readonly ElasticIndexSettingsService _elasticIndexSettingsService;
-    protected readonly IStringLocalizer S;
+
+    internal readonly IStringLocalizer S;
     private readonly ILogger _logger;
 
     public ElasticIndexInitializerService(
diff --git a/src/OrchardCore/OrchardCore.Settings.Core/Deployment/SiteSettingsPropertyDeploymentSource.cs b/src/OrchardCore/OrchardCore.Settings.Core/Deployment/SiteSettingsPropertyDeploymentSource.cs
index 43faa89391e..2103f168776 100644
--- a/src/OrchardCore/OrchardCore.Settings.Core/Deployment/SiteSettingsPropertyDeploymentSource.cs
+++ b/src/OrchardCore/OrchardCore.Settings.Core/Deployment/SiteSettingsPropertyDeploymentSource.cs
@@ -3,7 +3,7 @@
 
 namespace OrchardCore.Settings.Deployment;
 
-public class SiteSettingsPropertyDeploymentSource<TModel>
+public sealed class SiteSettingsPropertyDeploymentSource<TModel>
     : DeploymentSourceBase<SiteSettingsPropertyDeploymentStep<TModel>> where TModel : class, new()
 {
     private readonly ISiteService _siteService;