@Override
  public void restartDurableClient(int durableClientTimeout, Pool clientPool,
      Boolean addControlListener) {
    durableClientVM.invoke(() -> {
      if (CacheServerTestUtil.getPool() != null) {
        CacheServerTestUtil.getPool().endpointsNetUpForDUnitTest();
      }
    });

  }
Class <code>DurableClientCrashDUnitTest</code> tests durable client functionality when clients
are disconnected from servers.

@since GemFire 5.2
geode-cq/src/distributedTest/java/org/apache/geode/internal/cache/tier/sockets/DurableClientNetDownDUnitTest.java