@After
  public void tearDown() {
    if (client != null) {
      client.close();
    }

    shutdownCluster();
  }
The test setup creates a cluster with 1 locator and 2 servers, a client cache, and a CA
certificate. The cluster has SSL enabled for all components and uses client authentication. The
cluster members share a certificate which is signed by a CA and trust the CA certificate. The
client has a certificate signed by the same CA and also trusts the CA certificate.
geode-assembly/src/acceptanceTest/java/org/apache/geode/ssl/CertificateRotationTest.java