@Override
      public void run() {
        Region<String, String> rgn = getRootRegion().getSubregion(rgnName);

        if (!rgn.getAttributes().getScope().isAck()) {
          await().untilAsserted(() -> checkCommitAndDataExists(rgn));
        } else {
          checkCommitAndDataExists(rgn);
        }
      }
Clear all existing transaction listeners and install the given listener.
geode-dunit/src/main/java/org/apache/geode/cache30/MultiVMRegionTestCase.java