@Override
      public void registerConstantReferences(String className, Collection<Callbacks.ConstantRef> cRefs) {
        final String key = className.replace('.', '/');
        if (!cRefs.isEmpty()) {
          myConstantRefs.put(key, cRefs);
        }
        else {
          myConstantRefs.remove(key);
        }
      }
@Override
      public void registerConstantReferences(String className, Collection<Callbacks.ConstantRef> cRefs)