@Override
      public Object load(LoaderHelper helper) throws CacheLoaderException {
        String key = (String) helper.getKey();
        Portfolio p = new Portfolio(Integer.parseInt(key));
        return p;
      }
Tests Index maintenance on data loaded via cache loader
geode-core/src/integrationTest/java/org/apache/geode/cache/query/internal/index/IndexMaintenanceJUnitTest.java