Regenerated code with changes
diff --git a/src/ProtocolBuffersLite.Test/TestProtos/UnitTestLiteImportNonLiteProtoFile.cs b/src/ProtocolBuffersLite.Test/TestProtos/UnitTestLiteImportNonLiteProtoFile.cs
index 5a6033a..34ae37f 100644
--- a/src/ProtocolBuffersLite.Test/TestProtos/UnitTestLiteImportNonLiteProtoFile.cs
+++ b/src/ProtocolBuffersLite.Test/TestProtos/UnitTestLiteImportNonLiteProtoFile.cs
@@ -32,7 +32,7 @@
   [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]

   [global::System.CodeDom.Compiler.GeneratedCodeAttribute("ProtoGen", "2.3.0.277")]

   public sealed partial class TestLiteImportsNonlite : pb::GeneratedMessageLite<TestLiteImportsNonlite, TestLiteImportsNonlite.Builder> {

-    private static readonly TestLiteImportsNonlite defaultInstance = new Builder().BuildPartial();

+    private static readonly TestLiteImportsNonlite defaultInstance = new TestLiteImportsNonlite().MakeReadOnly();

     private static readonly string[] _testLiteImportsNonliteFieldNames = new string[] { "message" };

     private static readonly uint[] _testLiteImportsNonliteFieldTags = new uint[] { 10 };

     public static TestLiteImportsNonlite DefaultInstance {

@@ -40,7 +40,7 @@
     }

     

     public override TestLiteImportsNonlite DefaultInstanceForType {

-      get { return defaultInstance; }

+      get { return DefaultInstance; }

     }

     

     protected override TestLiteImportsNonlite ThisMessage {

@@ -49,12 +49,12 @@
     

     public const int MessageFieldNumber = 1;

     private bool hasMessage;

-    private global::Google.ProtocolBuffers.TestProtos.TestAllTypes message_ = global::Google.ProtocolBuffers.TestProtos.TestAllTypes.DefaultInstance;

+    private global::Google.ProtocolBuffers.TestProtos.TestAllTypes message_;

     public bool HasMessage {

       get { return hasMessage; }

     }

     public global::Google.ProtocolBuffers.TestProtos.TestAllTypes Message {

-      get { return message_; }

+      get { return message_ ?? global::Google.ProtocolBuffers.TestProtos.TestAllTypes.DefaultInstance; }

     }

     

     public override bool IsInitialized {

@@ -135,6 +135,10 @@
     public static TestLiteImportsNonlite ParseFrom(pb::ICodedInputStream input, pb::ExtensionRegistry extensionRegistry) {

       return ((Builder) CreateBuilder().MergeFrom(input, extensionRegistry)).BuildParsed();

     }

+    private TestLiteImportsNonlite MakeReadOnly() {

+      return this;

+    }

+    

     public static Builder CreateBuilder() { return new Builder(); }

     public override Builder ToBuilder() { return CreateBuilder(this); }

     public override Builder CreateBuilderForType() { return new Builder(); }

@@ -150,22 +154,22 @@
         get { return this; }

       }

       public Builder() {

-        result = DefaultInstance ?? new TestLiteImportsNonlite();

-        builderIsReadOnly = result == DefaultInstance;

+        result = DefaultInstance;

+        resultIsReadOnly = true;

       }

       internal Builder(TestLiteImportsNonlite cloneFrom) {

         result = cloneFrom;

-        builderIsReadOnly = true;

+        resultIsReadOnly = true;

       }

       

-      bool builderIsReadOnly;

-      TestLiteImportsNonlite result;

+      private bool resultIsReadOnly;

+      private TestLiteImportsNonlite result;

       

       private TestLiteImportsNonlite PrepareBuilder() {

-        if (builderIsReadOnly) {

+        if (resultIsReadOnly) {

           TestLiteImportsNonlite original = result;

           result = new TestLiteImportsNonlite();

-          builderIsReadOnly = false;

+          resultIsReadOnly = false;

           MergeFrom(original);

         }

         return result;

@@ -180,13 +184,13 @@
       }

       

       public override Builder Clear() {

-        result = DefaultInstance ?? new TestLiteImportsNonlite();

-        builderIsReadOnly = true;

+        result = DefaultInstance;

+        resultIsReadOnly = true;

         return this;

       }

       

       public override Builder Clone() {

-        if (builderIsReadOnly) {

+        if (resultIsReadOnly) {

           return new Builder(result);

         } else {

           return new Builder().MergeFrom(result);

@@ -198,11 +202,11 @@
       }

       

       public override TestLiteImportsNonlite BuildPartial() {

-        if (builderIsReadOnly) {

+        if (resultIsReadOnly) {

           return result;

         }

-        builderIsReadOnly = true;

-        return result;

+        resultIsReadOnly = true;

+        return result.MakeReadOnly();

       }

       

       public override Builder MergeFrom(pb::IMessageLite other) {

@@ -304,7 +308,7 @@
       public Builder ClearMessage() {

         PrepareBuilder();

         result.hasMessage = false;

-        result.message_ = global::Google.ProtocolBuffers.TestProtos.TestAllTypes.DefaultInstance;

+        result.message_ = null;

         return this;

       }

     }