File summaries + unused namespaces removal

Author: alex-kulakov

Orm/Xtensive.Orm/Orm/Building/Builders/IndexBuilder.cs

@@ -1,4 +1,4 @@
-// Copyright (C) 2007-2024 Xtensive LLC.
+// Copyright (C) 2007-2026 Xtensive LLC.
 // This code is distributed under MIT license terms.
 // See the License.txt file in the project root for more information.
 // Created by: Dmitri Maximov
@@ -11,7 +11,6 @@
 using Xtensive.Core;
 using Xtensive.Orm.Building.Definitions;
 using Xtensive.Orm.Model;
-using System.Runtime.CompilerServices;
 
 namespace Xtensive.Orm.Building.Builders
 {

Orm/Xtensive.Orm/Orm/Building/Builders/ModelBuilder.cs

@@ -1,4 +1,4 @@
-// Copyright (C) 2007-2024 Xtensive LLC.
+// Copyright (C) 2007-2026 Xtensive LLC.
 // This code is distributed under MIT license terms.
 // See the License.txt file in the project root for more information.
 // Created by: Dmitri Maximov

Orm/Xtensive.Orm/Orm/Building/Builders/ModelDefBuilder.cs

@@ -1,4 +1,4 @@
-// Copyright (C) 2009-2022 Xtensive LLC.
+// Copyright (C) 2009-2026 Xtensive LLC.
 // This code is distributed under MIT license terms.
 // See the License.txt file in the project root for more information.
 // Created by: Dmitri Maximov

Orm/Xtensive.Orm/Orm/Building/BuildingContext.cs

@@ -1,4 +1,4 @@
-// Copyright (C) 2007-2021 Xtensive LLC.
+// Copyright (C) 2007-2026 Xtensive LLC.
 // This code is distributed under MIT license terms.
 // See the License.txt file in the project root for more information.
 // Created by: Dmitri Maximov

Orm/Xtensive.Orm/Orm/Building/Definitions/IndexDef.cs

@@ -1,6 +1,6 @@
-// Copyright (C) 2003-2010 Xtensive LLC.
-// All rights reserved.
-// For conditions of distribution and use, see license.
+// Copyright (C) 2007-2026 Xtensive LLC.
+// This code is distributed under MIT license terms.
+// See the License.txt file in the project root for more information.
 // Created by: Alexis Kochetov
 // Created:    2007.09.29
 

Orm/Xtensive.Orm/Orm/Model/IndexInfo.cs

@@ -1,12 +1,11 @@
-// Copyright (C) 2007-2020 Xtensive LLC.
+// Copyright (C) 2007-2026 Xtensive LLC.
 // This code is distributed under MIT license terms.
 // See the License.txt file in the project root for more information.
 // Created by: Alex Ustinov
 // Created:    2007.07.10
 
 using System;
 using System.Collections.Generic;
-using System.Collections.ObjectModel;
 using System.Diagnostics;
 using System.Linq;
 using System.Linq.Expressions;

Orm/Xtensive.Orm/Orm/Providers/ProviderFeatures.cs

@@ -1,4 +1,4 @@
-// Copyright (C) 2009-2022 Xtensive LLC.
+// Copyright (C) 2009-2026 Xtensive LLC.
 // This code is distributed under MIT license terms.
 // See the License.txt file in the project root for more information.
 // Created by: Dmitri Maximov

Orm/Xtensive.Orm/Orm/Providers/ProviderInfo.cs

@@ -1,12 +1,11 @@
-// Copyright (C) 2009-2020 Xtensive LLC.
+// Copyright (C) 2009-2026 Xtensive LLC.
 // This code is distributed under MIT license terms.
 // See the License.txt file in the project root for more information.
 // Created by: Alexander Nikolaev
 // Created:    2009.06.01
 
 using System;
 using System.Collections.Generic;
-using System.Linq;
 using Xtensive.Collections;
 
 namespace Xtensive.Orm.Providers

Orm/Xtensive.Orm/Orm/Providers/ProviderInfoBuilder.cs

@@ -1,4 +1,4 @@
-// Copyright (C) 2010-2020 Xtensive LLC.
+// Copyright (C) 2010-2026 Xtensive LLC.
 // This code is distributed under MIT license terms.
 // See the License.txt file in the project root for more information.
 // Created by: Denis Krjuchkov

Orm/Xtensive.Orm/Orm/Upgrade/Internals/CatalogCloner.cs

@@ -1,4 +1,4 @@
-// Copyright (C) 2016-2020 Xtensive LLC.
+// Copyright (C) 2016-2026 Xtensive LLC.
 // This code is distributed under MIT license terms.
 // See the License.txt file in the project root for more information.
 // Created by: Alexey Kulakov
@@ -9,7 +9,6 @@
 using System.Linq;
 using Xtensive.Core;
 using Xtensive.Orm.Providers;
-using Xtensive.Sql.Dml;
 using Xtensive.Sql.Model;
 using Index = Xtensive.Sql.Model.Index;