@Override
      public Object load2(LoaderHelper helper) throws CacheLoaderException {

        Object[] array = (Object[]) helper.getArgument();
        assertEquals(one, array[0]);
        array[0] = two;

        return value;
      }
Tests that a local writer receives a modified version of the callback argument on an update.
geode-core/src/distributedTest/java/org/apache/geode/cache30/LocalRegionDUnitTest.java