In the OptimizedLocalizationSupport the bundles are stored in a map. In order to make the getContents methods unreachable, the bundles are initialized eagerly and the lookup methods are substituted. However, if there are bundle instances somewhere in the heap that were not put in the map, they won't be initialized and therefore accessing their content will cause runtime failures. Therefore, we visit each object in the heap and if it is a ResourceBundle, we eagerly initialize it.