private void destroyRegionOnVm(final VM vm, final String regionName) {
    vm.invoke(new SerializableRunnable() {
      @Override
      public void run() {
        destroyRegion(regionName);
      }
    });
  }
Destroys a region.

@param vm a virtual machine.
@param regionName the region to destroy.
geode-core/src/distributedTest/java/org/apache/geode/internal/compression/CompressionStatsDUnitTest.java