code:     protected void execute() {
  
          if (controllersListStrings == null && !removeCont && !removeAll) {
              print("No controller are given, skipping.");
              return;
          }
          if (controllersListStrings != null) {
              Arrays.asList(controllersListStrings).forEach(
                      cInfoString -> {
                          ControllerInfo controllerInfo = parseCInfoString(cInfoString);
                          if (controllerInfo != null) {
                              controllers.add(controllerInfo);
                          }
                      });
          }
          DriverService service = get(DriverService.class);
          deviceId = DeviceId.deviceId(uri);
          DriverHandler h = service.createHandler(deviceId);
          ControllerConfig config = h.behaviour(ControllerConfig.class);
          print("before:");
          config.getControllers().forEach(c -> print(c.target()));
          try {
              if (removeAll) {
                  if (!controllers.isEmpty()) {
                      print("Controllers list should be empty to remove all controllers");
                  } else {
                      List<ControllerInfo> controllersToRemove = config.getControllers();
                      controllersToRemove.forEach(c -> print("Will remove " + c.target()));
                      config.removeControllers(controllersToRemove);
                  }
              } else {
                  if (controllers.isEmpty()) {
                      print("Controllers list is empty, cannot set/remove empty controllers");
                  } else {
                      if (removeCont) {
                          print("Will remove specified controllers");
                          config.removeControllers(controllers);
                      } else {
                          print("Will add specified controllers");
                          config.setControllers(controllers);
                      }
                  }
              }
          } catch (NullPointerException e) {
              print("No Device with requested parameters {} ", uri);
          }
          print("after:");
          config.getControllers().forEach(c -> print(c.target()));
          print("size %d", config.getControllers().size());
      }
  
  
  