@Override
      public Object load2(final LoaderHelper helper) throws CacheLoaderException {
        assertThat(helper).isNotNull();
        assertThat(helper.getKey()).isEqualTo(key1);
        assertThat(helper.getRegion().getName()).isEqualTo(regionName);
        assertThat(helper.getArgument()).isEqualTo(cacheLoaderArg);
        return helper.getArgument();
      }
This is a PartitionedRegion test for scope = D_ACK. 4 VMs are used to create the PR with and
without(Only Accessor) the DataStore.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/PartitionedRegionAPIDUnitTest.java