private void destroyPartitionedRegion(final VM vm) {
    vm.invoke(() -> {
      Cache cache = getCache();
      Region<String, String> region = cache.getRegion(regionName);
      region.destroyRegion();

      assertThat(region.isDestroyed()).isTrue();
      assertThat(cache.getRegion(regionName)).isNull();
    });
  }
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