code: public boolean isEquivalent(final Plugin testPlugin) {
      if (testPlugin != null && testPlugin instanceof SocketHubReceiver) {
        SocketHubReceiver sReceiver = (SocketHubReceiver) testPlugin;
  
        return (port == sReceiver.getPort()
                && host.equals(sReceiver.getHost())
                && reconnectionDelay == sReceiver.getReconnectionDelay()
                && super.isEquivalent(testPlugin));
      }
      return false;
    }
docs: Returns true if the receiver is the same class and they are
  configured for the same properties, and super class also considers
  them to be equivalent. This is used by PluginRegistry when determining
  if the a similarly configured receiver is being started.
  
  @param testPlugin The plugin to test equivalency against.
  @return boolean True if the testPlugin is equivalent to this plugin.