lib/compo/hash_branch.rb in compo-0.1.3 vs lib/compo/hash_branch.rb in compo-0.1.4

@@ -10,9 +10,10 @@
   # This is an extension of HashComposite to include the Movable and
   # ParentTracker mixins.
   class HashBranch < HashComposite
     include Movable
     include ParentTracker
+    include UrlReferenceable
 
     # Initialises the HashBranch
     #
     # The HashBranch is created with no children, no parent, and no ID.
     #