@After
  public void tearDown() throws Exception {
    DistributionMessageObserver.setInstance(null);
    invokeInEveryVM(() -> {
      DistributionMessageObserver.setInstance(null);
    });

    disconnectAllFromDS();
  }
This class tests that bucket regions can handle a failure of the GII target during GII.

<p>
TRAC #41091: Missing primary detected after member forcefully disconnected from DS (underlying
InternalGemFireError: Trying to clear a bucket region that was not destroyed)
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/BucketCreationGIIHARegressionTest.java