diff -r 000000000000 -r 151f4ccd7673 rt/vm/src/main/java/org/apidesign/vm4brwsr/ObfuscationDelegate.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rt/vm/src/main/java/org/apidesign/vm4brwsr/ObfuscationDelegate.java	Thu Mar 21 18:48:46 2013 +0100
@@ -0,0 +1,75 @@
+/**
+ * Back 2 Browser Bytecode Translator
+ * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. Look for COPYING file in the top folder.
+ * If not, see http://opensource.org/licenses/GPL-2.0.
+ */
+package org.apidesign.vm4brwsr;
+
+import java.io.IOException;
+import org.apidesign.vm4brwsr.ByteCodeParser.ClassData;
+import org.apidesign.vm4brwsr.ByteCodeParser.FieldData;
+import org.apidesign.vm4brwsr.ByteCodeParser.MethodData;
+
+abstract class ObfuscationDelegate {
+    static ObfuscationDelegate NULL =
+            new ObfuscationDelegate() {
+                @Override
+                public void exportJSProperty(Appendable out,
+                                             String destObject,
+                                             String propertyName)
+                            throws IOException {
+                }
+
+                @Override
+                public void exportClass(Appendable out,
+                                        String destObject,
+                                        String mangledName,
+                                        ClassData classData)
+                                            throws IOException {
+                }
+
+                @Override
+                public void exportMethod(Appendable out,
+                                         String destObject,
+                                         String mangledName,
+                                         MethodData methodData)
+                                             throws IOException {
+                }
+
+                @Override
+                public void exportField(Appendable out,
+                                        String destObject,
+                                        String mangledName,
+                                        FieldData fieldData)
+                                            throws IOException {
+                }
+            };
+
+    public abstract void exportJSProperty(
+            Appendable out, String destObject, String propertyName)
+                throws IOException;
+
+    public abstract void exportClass(
+            Appendable out, String destObject, String mangledName,
+            ClassData classData) throws IOException;
+
+    public abstract void exportMethod(
+            Appendable out, String destObject, String mangledName,
+            MethodData methodData) throws IOException;
+
+    public abstract void exportField(
+            Appendable out, String destObject, String mangledName,
+            FieldData fieldData) throws IOException;
+}