@Test
  public void testPartitionedRegionConcurrentOperations() throws Exception {
    vm0.invoke(() -> createPartitionedRegion());
    vm1.invoke(this::createAccessor);
    vm2.invoke(() -> createPartitionedRegion());
    vm3.invoke(this::createAccessor);

    validateConcurrentMapOps(vm0);

    destroyPartitionedRegion(vm0);
  }
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