Index: src/Common/SharpMap/Data/Providers/FeatureCollection.cs
===================================================================
diff -u -r18f9b18cab9da0c768badb3084415e993a5414ee -r0153333b695581ca406c286a27467bc30d7aa5f8
--- src/Common/SharpMap/Data/Providers/FeatureCollection.cs	(.../FeatureCollection.cs)	(revision 18f9b18cab9da0c768badb3084415e993a5414ee)
+++ src/Common/SharpMap/Data/Providers/FeatureCollection.cs	(.../FeatureCollection.cs)	(revision 0153333b695581ca406c286a27467bc30d7aa5f8)
@@ -4,7 +4,6 @@
 using System.ComponentModel;
 using DelftTools.Utils;
 using DelftTools.Utils.Collections;
-using DelftTools.Utils.Data;
 using DelftTools.Utils.Reflection;
 using GeoAPI.CoordinateSystems;
 using GeoAPI.Extensions.Feature;
@@ -18,7 +17,7 @@
     //Note: See the WFDExplorer plugin for an implementation of FeatureCollection<T>!! It is not fully covered with tests 
     //yet because not all requirements are clear
     
-    public class FeatureCollection : Unique<long>, IFeatureProvider
+    public class FeatureCollection : IFeatureProvider
     {
         private Type featureType;
         protected IList features;