public void shutdownMiniZKCluster() throws IOException {
    if (!passedZkCluster && this.zkCluster != null) {
      this.zkCluster.shutdown();
      this.zkCluster = null;
    }
  }
Shuts down zk cluster created by call to {@link #startMiniZKCluster()} or does nothing.
@see #startMiniZKCluster()
hbase-zookeeper/src/test/java/org/apache/hadoop/hbase/HBaseZKTestingUtil.java