This brings the AVM implementation to the 'it compiles so it should work"

state.  It's hooked up to nothing right now.  First will be a basic test harness 
for it, then...


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/WCM-DEV2/root@2891 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/avm/Layered.java

@@ -0,0 +1,20 @@
+/**
+ * 
+ */
+package org.alfresco.repo.avm;
+
+/**
+ * Layered nodes share this method.
+ * @author britt
+ */
+public interface Layered
+{
+    /**
+     * Get the indirection, or underlying path that this 
+     * node points to.
+     * @param lookup The lookup path.  Needed for most nodes to determine
+     * underlying path.
+     * @return
+     */
+    public String getUnderlying(Lookup lookup);
+}