code: @Override
      public void exportAll() throws DevFailed {
          // load tango db cache
          DatabaseFactory.getDatabase().loadCache(serverName, hostName);
          // special case for admin device
          final DeviceClassBuilder clazz = new DeviceClassBuilder(AdminDevice.class, Constants.ADMIN_SERVER_CLASS_NAME);
          deviceClassList.add(clazz);
          final DeviceImpl dev = buildDevice(Constants.ADMIN_DEVICE_DOMAIN + "/" + serverName, clazz);
          ((AdminDevice) dev.getBusinessObject()).setTangoExporter(this);
          ((AdminDevice) dev.getBusinessObject()).setClassList(deviceClassList);
  
          // load server class
          exportDevices();
  
          // init polling pool config
          TangoCacheManager.initPoolConf();
  
          // clear tango db cache (used only for server start-up phase)
          DatabaseFactory.getDatabase().clearCache();
      }
docs: Build all devices of all classes that are is this executable
  
  @throws DevFailed