public HbckServerName parseServerName(ServerName serverName) {
    return new HbckServerName(serverName.getHostname(), serverName.getPort(),
      serverName.getStartCode());
  }
The root object exposing hbck.jsp page as JSON Output.
hbase-server/src/main/java/org/apache/hadoop/hbase/master/http/hbck/resource/HbckMetricsResource.java