Index: oak-mongomk/src/main/java/org/apache/jackrabbit/mongomk/util/LogWrapper.java
===================================================================
--- oak-mongomk/src/main/java/org/apache/jackrabbit/mongomk/util/LogWrapper.java	(revision 1484344)
+++ oak-mongomk/src/main/java/org/apache/jackrabbit/mongomk/util/LogWrapper.java	(working copy)
@@ -28,20 +28,24 @@
 /**
  * A logging microkernel implementation.
  */
-public class LogWrapper implements MicroKernel {
+public class LogWrapper<T extends MicroKernel> implements MicroKernel {
     
     private static final Logger LOG = LoggerFactory.getLogger(LogWrapper.class);
 
     private static final boolean DEBUG = Boolean.parseBoolean(System.getProperty("mk.debug", "true"));
     private static final AtomicInteger NEXT_ID = new AtomicInteger();
 
-    private final MicroKernel mk;
+    private final T mk;
     private final int id = NEXT_ID.getAndIncrement();
 
-    public LogWrapper(MicroKernel mk) {
+    public LogWrapper(T mk) {
         this.mk = mk;
     }
 
+    public T unwrap() {
+        return mk;
+    }
+
     @Override
     public String commit(String path, String jsonDiff, String revisionId, String message) {
         try {
@@ -55,10 +59,6 @@
         }
     }
 
-    public void dispose() {
-        // do nothing
-    }
-
     @Override
     public String getHeadRevision() {
         try {