@Override
      public void afterConflation(ByteBuffer orig, ByteBuffer conflated) {
        Thread th = new Thread(() -> region.put("2", new byte[75]));
        assertNull(conflated);
        th.start();
        ThreadUtils.join(th, 30 * 1000);
        LocalRegion.ISSUE_CALLBACKS_TO_CACHE_OBSERVER = false;

      }
Tests the bug which arises in case of asynch mode during oplog switching caused by conflation
of create/destroy operation.The bug occurs if a create operation is followed by destroy but
before destroy proceeds some other operation causes oplog switching
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/OplogJUnitTest.java