private void checkCCRegionTombstoneCount(String msg, int expected) {
    int actual = CCRegion.getTombstoneCount();
    if (expected != actual) {
      assertThat(actual)
          .describedAs(msg + " region tombstone count was " + actual + " expected=" + expected
              + " TombstoneService=" + CCRegion.getCache().getTombstoneService())
          .isEqualTo(expected);
    }
  }
Clear all existing transaction listeners and install the given listener.
geode-dunit/src/main/java/org/apache/geode/cache30/MultiVMRegionTestCase.java