docs: public static ResourceBundle getBundle(ResourceBundle self, String bundleName, Locale locale) {
          Class c = ReflectionUtils.getCallingClass();
          ClassLoader targetCL = c != null ? c.getClassLoader() : null;
          if (targetCL == null) targetCL = ClassLoader.getSystemClassLoader();
          return ResourceBundle.getBundle(bundleName, locale, targetCL);
      }