/** Loads the resource bundle corresponding to the resource bundle base name and locale. */
 protected ResourceBundle loadResourceBundle() {
   ResourceBundle loadedBundle;
   if (resourceBundleBaseName == null) {
     loadedBundle = null;
   } else {
     loadedBundle = JRResourcesUtil.loadResourceBundle(resourceBundleBaseName, locale);
   }
   return loadedBundle;
 }