@Before
  public void setUp() throws Exception {
    prNamePrefix = "PR-";
    numberOfRegions = 2;
    totalNumBuckets = 5;
    redundantCopies = 0;
    localMaxMemory = 200;
    loopSleepMillis = 100;

    vm0 = getHost(0).getVM(0);
    vm1 = getHost(0).getVM(1);
    vm2 = getHost(0).getVM(2);
    vm3 = getHost(0).getVM(3);
  }
This test aims to test the destroyRegion functionality.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/PartitionedRegionDestroyDUnitTest.java