private void putInPartitionRegion(int startIndexForKey, int endIndexForKey) {
    Region<String, String> region = getCache().getRegion(TEST_REGION);
    for (int k = startIndexForKey; k < endIndexForKey; k++) {
      region.put(TEST_REGION + k, TEST_REGION + k);
    }
  }
This test performs following operations:<br>

1. Create multiple Partition Regions in 4 VMs<br>

2. Performs put()operations on all the partitioned region from all the VM's<br>

3. Performs destroy(key)operations for some of the keys of all the partitioned region from all
the VM's<br>

4. Checks containsKey and ContainsValueForKey APIs
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/PartitionedRegionMultipleDUnitTest.java