func: static void nvme_instance_init(Object *obj)
  
  {
  
      object_property_add(obj, "bootindex", "int32",
  
                          nvme_get_bootindex,
  
                          nvme_set_bootindex, NULL, NULL, NULL);
  
      object_property_set_int(obj, -1, "bootindex", NULL);
  
  }
  