docs: private void initWsClient(BundleContext context) throws Exception {
          ServiceReference serviceRef = context.getServiceReference(ConfigurationAdmin.class.getName());
          ConfigurationAdmin cfgAdmin = (ConfigurationAdmin)context.getService(serviceRef); 
          Configuration config = cfgAdmin.getConfiguration("org.talend.esb.sam.agent");
  
          String serviceURL = (String)config.getProperties().get("service.url");
          retryNum = Integer.parseInt((String)config.getProperties().get("service.retry.number"));
          retryDelay = Long.parseLong((String)config.getProperties().get("service.retry.delay"));
  
          JaxWsProxyFactoryBean factory = new JaxWsProxyFactoryBean();
          factory.setServiceClass(org.talend.esb.sam.monitoringservice.v1.MonitoringService.class);
          factory.setAddress(serviceURL);
          monitoringService = (MonitoringService)factory.create();
      }