C# calls indexers "Item", not "Items".

ICSharpCode.NRefactory.Tests/TypeSystem/TypeSystemTests.cs

@@ -199,6 +199,7 @@ namespace ICSharpCode.NRefactory.TypeSystem
 		{
 			var testClass = testCasePC.GetTypeDefinition(typeof(PropertyTest));
 			IProperty p = testClass.Properties.Single(pr => pr.IsIndexer);
+			Assert.AreEqual("Item", p.Name);
 			Assert.IsTrue(p.CanGet);
 			Assert.AreEqual(Accessibility.Public, p.Accessibility);
 			Assert.AreEqual(Accessibility.Public, p.Getter.Accessibility);

ICSharpCode.NRefactory/CSharp/Parser/TypeSystemConvertVisitor.cs

@@ -484,7 +484,7 @@ namespace ICSharpCode.NRefactory.CSharp
 		
 		public override IEntity VisitIndexerDeclaration(IndexerDeclaration indexerDeclaration, object data)
 		{
-			DefaultProperty p = new DefaultProperty(currentTypeDefinition, "Items");
+			DefaultProperty p = new DefaultProperty(currentTypeDefinition, "Item");
 			p.EntityType = EntityType.Indexer;
 			p.Region = MakeRegion(indexerDeclaration);
 			p.BodyRegion = MakeBraceRegion(indexerDeclaration);