@Override
      public void run() {
        RegionFactory<?, ?> f = getCache().createRegionFactory(getRegionAttributes());
        CCRegion = (LocalRegion) f.create(name);
        if (VM.getVMId() == 0) {
          CacheServer bridge = CCRegion.getCache().addCacheServer();
          bridge.setPort(serverPort);
          try {
            bridge.start();
          } catch (IOException ex) {
            fail("While creating bridge", ex);
          }
        }
      }
Clear all existing transaction listeners and install the given listener.
geode-dunit/src/main/java/org/apache/geode/cache30/MultiVMRegionTestCase.java