1 files changed, 44 insertions, 0 deletions
diff --git a/src/core/Support/Compatibility/WrappedHashSet.cs b/src/core/Support/Compatibility/WrappedHashSet.cs
new file mode 100644
index 0000000..c2ffd21
--- /dev/null
+++ b/src/core/Support/Compatibility/WrappedHashSet.cs
@@ -0,0 +1,44 @@
+/* 
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#if NET35
+
+using System;
+using System.Collections.Generic;
+using System.Runtime.Serialization;
+
+namespace Lucene.Net.Support.Compatibility
+{
+    [Serializable]
+    class WrappedHashSet<T> : HashSet<T>, ISet<T>
+    {
+        public WrappedHashSet()
+        { }
+ 
+        public WrappedHashSet(IEnumerable<T> items)
+            : base(items)
+        { }
+
+        protected WrappedHashSet(SerializationInfo info, StreamingContext context)
+            : base (info, context)
+        {
+            
+        }
+    }
+}
+
+#endif
+\ No newline at end of file