public static void startServer() throws IOException {

    Iterator iterator = cache.getCacheServers().iterator();
    if (iterator.hasNext()) {
      CacheServer server = (CacheServer) iterator.next();
      server.start();
    }

  }
This test verifies that the memory footprint of the ha region queues is less when ha-overflow
is enabled (with an appropriate value of haCapacity) compared to when it is disabled, for the
same amount of data feed.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/ha/HARQueueNewImplDistributedTest.java