@After
  public void tearDown() {
    Invoke.invokeInEveryVM(() -> {
      if (basicGetCache() != null) {
        basicGetCache().close();
      }
      PoolManager.getAll().forEach((key, value) -> value.destroy());
    });
  }
The port on which the cache server was started in this VM
geode-core/src/distributedTest/java/org/apache/geode/cache/ConnectionPoolDUnitTest.java