@Override
      public Object call() throws Exception {
        TestRegion.getCache().getTombstoneService().forceBatchExpirationForTests(10);
        return null;
      }
test that distributed GC messages are properly cleaned out of durable client HA queues
geode-core/src/distributedTest/java/org/apache/geode/cache30/ClientServerCCEDUnitTest.java