code: public AdminBuilder getAdminBuilder() {
          if (adminBuilder == null) {
              adminBuilder = AdminBuilder.adminBuilder();
  
              final String qbitAdminPort = findAdminPort();
              if (qbitAdminPort != null && !qbitAdminPort.isEmpty()) {
                  adminBuilder.setPort(Integer.parseInt(qbitAdminPort));
              }
              adminBuilder.setContextBuilder(this.getContextMetaBuilder());
              adminBuilder.setHealthService(getHealthService());
              adminBuilder.registerJavaVMStatsJob(getStatServiceBuilder().buildStatsCollector());
  
          }
          return adminBuilder;
      }
docs: Get the Admin builder.
  
  @return admin builder.