Add IgnoreRuleCollection.IgnoreIndex method

- method is not implemented for now

Author: alex-kulakov

Orm/Xtensive.Orm/Orm/Configuration/IgnoreRuleCollection.cs

@@ -1,6 +1,6 @@
-// Copyright (C) 2013 Xtensive LLC.
-// All rights reserved.
-// For conditions of distribution and use, see license.
+// Copyright (C) 2013 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
 // Created:    2013.08.16
 
@@ -38,6 +38,16 @@ public IIgnoreRuleConstructionFlow IgnoreColumn(string columnName)
       return new IgnoreRuleConstructionFlow(rule);
     }
 
+    /// <summary>
+    /// Adds to collection <see cref="IgnoreRule"/> for targeted specified <paramref name="indexName"/>. 
+    /// </summary>
+    /// <param name="indexName">Index to ignore</param>
+    /// <returns><see cref="IgnoreRule"/> construction flow</returns>
+    public IIgnoreRuleConstructionFlow IgnoreIndex(string indexName)
+    {
+      throw new NotImplementedException();
+    }
+
     /// <inheritdoc />
     public object Clone()
     {