@Override
          public JMXServiceURL getAddress() {
            return url;
          }
http://docs.oracle.com/javase/6/docs/technotes/guides/management/agent.html #gdfvq
https://blogs.oracle.com/jmxetc/entry/java_5_premain_rmi_connectors
https://blogs.oracle.com/jmxetc/entry/building_a_remotely_stoppable_connector
https://blogs.oracle.com/jmxetc/entry/jmx_connecting_through_firewalls_using
https://blogs.oracle.com/jmxetc/entry/java_5_premain_rmi_connectors
geode-core/src/main/java/org/apache/geode/management/internal/ManagementAgent.java