@Override
  protected final void postSetUp() throws Exception {
    props = new DiskRegionProperties();
    props.setDiskDirs(dirs);
  }
This test will test that there are no unexpected behaviours if the the region attributes are
changed after starting it again.

The behaviour should be predictable
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/DiskRegionChangingRegionAttributesJUnitTest.java