@Override
      public void visitProvide(String service, String... providers) {
        myUsages.add(UsageRepr.createClassUsage(myContext, myContext.get(service)));
        if (providers != null) {
          for (String provider : providers) {
            myUsages.add(UsageRepr.createClassUsage(myContext, myContext.get(provider)));
          }
        }
      }
@Override
      public void visitProvide(String service, String... providers)