diff -r ff2a253900ed -r 4fef6b767f61 rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java
--- a/rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java	Wed Mar 11 18:41:12 2015 +0100
+++ b/rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java	Wed Mar 11 18:58:39 2015 +0100
@@ -20,6 +20,7 @@
 import java.io.IOException;
 import java.io.InputStream;
 import org.apidesign.bck2brwsr.core.JavaScriptBody;
+import org.apidesign.vm4brwsr.Bck2Brwsr.Flow;
 import static org.apidesign.vm4brwsr.ByteCodeParser.*;
 
 /** Translator of the code inside class files to JavaScript.
@@ -449,6 +450,7 @@
             }
             return defineProp;
         }
+        Flow flow = checkFlow(byteCodes);
 
         final StackMapper smapper = new StackMapper();
 
@@ -2466,4 +2468,8 @@
     private static void println(String msg) {
         System.err.println(msg);
     }
+
+    protected Flow checkFlow(byte[] byteCodes) {
+        return null;
+    }
 }