diff --git a/pmc/include/object.h b/pmc/include/object.h
--- a/pmc/include/object.h
+++ b/pmc/include/object.h
@@ -8,13 +8,17 @@
 
 #include <string>
 
+extern int refCounter;
+
 class Object {
   protected:
     std::string name;
 
   public:
     virtual ~ Object ();
+
     virtual std::string getName ();
     virtual Object getClass ();
+    int getInstances ();
 };
 #endif