NuCache - code cleanup

src/Umbraco.Web/PublishedCache/NuCache/DataSource/BTree.cs

@@ -6,7 +6,7 @@ using CSharpTest.Net.Serialization;
 
 namespace Umbraco.Web.PublishedCache.NuCache.DataSource
 {
-    class BTree
+    internal class BTree
     {
         public static BPlusTree<int, ContentNodeKit> GetTree(string filepath, bool exists)
         {
@@ -28,7 +28,7 @@ namespace Umbraco.Web.PublishedCache.NuCache.DataSource
             return tree;
         }
 
-        class ContentNodeKitSerializer : ISerializer<ContentNodeKit>
+        private class ContentNodeKitSerializer : ISerializer<ContentNodeKit>
         {
             static readonly ContentDataSerializer DataSerializer = new ContentDataSerializer();
             //static readonly ListOfIntSerializer ChildContentIdsSerializer = new ListOfIntSerializer();
@@ -82,7 +82,7 @@ namespace Umbraco.Web.PublishedCache.NuCache.DataSource
 
         class ContentDataSerializer : ISerializer<ContentData>
         {
-            private readonly static DictionaryOfValuesSerializer PropertiesSerializer = new DictionaryOfValuesSerializer();
+            private static readonly DictionaryOfValuesSerializer PropertiesSerializer = new DictionaryOfValuesSerializer();
 
             public ContentData ReadFrom(Stream stream)
             {
@@ -131,7 +131,7 @@ namespace Umbraco.Web.PublishedCache.NuCache.DataSource
         }
         */
 
-        class DictionaryOfValuesSerializer : ISerializer<IDictionary<string, object>>
+        private class DictionaryOfValuesSerializer : ISerializer<IDictionary<string, object>>
         {
             public IDictionary<string, object> ReadFrom(Stream stream)
             {

src/Umbraco.Web/PublishedCache/NuCache/DataSource/ContentData.cs

@@ -4,7 +4,7 @@ using System.Collections.Generic;
 namespace Umbraco.Web.PublishedCache.NuCache.DataSource
 {
     // represents everything that is specific to draft or published version
-    class ContentData
+    internal class ContentData
     {
         public bool Published { get; set; }
 

src/Umbraco.Web/PublishedCache/NuCache/DataSource/Database.cs

@@ -12,7 +12,7 @@ using Umbraco.Web.Composing;
 namespace Umbraco.Web.PublishedCache.NuCache.DataSource
 {
     // provides efficient database access for NuCache
-    class Database
+    internal class Database
     {
         public ContentNodeKit GetContentSource(IScopeUnitOfWork uow, int id)
         {